refactor(iam): update service account samples to use GAPIC library

[msilc]

Description

Service accounts snippets rewrote using a new library

Checklist

• [x] I have followed Sample Format Guide
• [ ] pom.xml parent set to latest shared-configuration
• [ ] Appropriate changes to README are included in PR
• [ ] These samples need a new API enabled in testing projects to pass (let us know which ones)
• [ ] These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• [x] Tests pass: mvn clean verify required
• [x] Lint passes: mvn -P lint checkstyle:check required
• [ ] Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• [ ] This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• [ ] This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• [ ] Please merge this PR for me once it is approved

[Sita04]

IMHO this should be moved out from iam/api-client to iam/cloud-client. @Sita04 please advise.

Agreed it should be moved out of api-client folder. We have an existing folder for GAPIC samples under iam/snippets Kindly consider creating a new sub-folder and moving these. We should also make note to update doc references for the samples.

@hegemonic for visibility.

[msilc]

IMHO this should be moved out from iam/api-client to iam/cloud-client. @Sita04 please advise.

Agreed it should be moved out of api-client folder. We have an existing folder for GAPIC samples under iam/snippets Kindly consider creating a new sub-folder and moving these. We should also make note to update doc references for the samples.

@hegemonic for visibility.

Should only the updated snippets or the entire iam/api-client be moved to the new folder?

[Sita04]

IMHO this should be moved out from iam/api-client to iam/cloud-client. @Sita04 please advise.

Agreed it should be moved out of api-client folder. We have an existing folder for GAPIC samples under iam/snippets Kindly consider creating a new sub-folder and moving these. We should also make note to update doc references for the samples. @hegemonic for visibility.

Should only the updated snippets or the entire iam/api-client be moved to the new folder?

Only the snippets that are updated should be moved to the iam/snippets folder. Thanks!

[snippet-bot[bot]]

Here is the summary of changes.

You are about to add 11 region tags.

- [iam/snippets/src/main/java/CreateServiceAccount.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/CreateServiceAccount.java#L16), tag `iam_create_service_account` - [iam/snippets/src/main/java/CreateServiceAccountKey.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/CreateServiceAccountKey.java#L16), tag `iam_create_key` - [iam/snippets/src/main/java/DeleteServiceAccount.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/DeleteServiceAccount.java#L16), tag `iam_delete_service_account` - [iam/snippets/src/main/java/DeleteServiceAccountKey.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/DeleteServiceAccountKey.java#L16), tag `iam_delete_key` - [iam/snippets/src/main/java/DisableServiceAccount.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/DisableServiceAccount.java#L16), tag `iam_disable_service_account` - [iam/snippets/src/main/java/DisableServiceAccountKey.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/DisableServiceAccountKey.java#L16), tag `iam_disable_service_account_key` - [iam/snippets/src/main/java/EnableServiceAccount.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/EnableServiceAccount.java#L16), tag `iam_enable_service_account` - [iam/snippets/src/main/java/EnableServiceAccountKey.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/EnableServiceAccountKey.java#L16), tag `iam_enable_service_account_key` - [iam/snippets/src/main/java/ListServiceAccountKeys.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/ListServiceAccountKeys.java#L16), tag `iam_list_keys` - [iam/snippets/src/main/java/ListServiceAccounts.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/ListServiceAccounts.java#L16), tag `iam_list_service_accounts` - [iam/snippets/src/main/java/RenameServiceAccount.java:16](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/68fdb8977cd2823f020d0c40e309f8e3998dbcf5/iam/snippets/src/main/java/RenameServiceAccount.java#L16), tag `iam_rename_service_account`

You are about to delete 11 region tags.

- [iam/api-client/src/main/java/iam/snippets/CreateServiceAccountKey.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/CreateServiceAccountKey.java#L18), tag `iam_create_key` - [iam/api-client/src/main/java/iam/snippets/DisableServiceAccount.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/DisableServiceAccount.java#L18), tag `iam_disable_service_account` - [iam/api-client/src/main/java/iam/snippets/DisableServiceAccountKey.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/DisableServiceAccountKey.java#L18), tag `iam_disable_service_account_key` - [iam/api-client/src/main/java/iam/snippets/EnableServiceAccount.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/EnableServiceAccount.java#L18), tag `iam_enable_service_account` - [iam/api-client/src/main/java/iam/snippets/EnableServiceAccountKey.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/EnableServiceAccountKey.java#L18), tag `iam_enable_service_account_key` - [iam/api-client/src/main/java/iam/snippets/ListServiceAccountKeys.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/ListServiceAccountKeys.java#L18), tag `iam_list_keys` - [iam/api-client/src/main/java/iam/snippets/ListServiceAccounts.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/ListServiceAccounts.java#L18), tag `iam_list_service_accounts` - [iam/api-client/src/main/java/iam/snippets/CreateServiceAccount.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/CreateServiceAccount.java#L18), tag `iam_create_service_account` - [iam/api-client/src/main/java/iam/snippets/DeleteServiceAccount.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/DeleteServiceAccount.java#L18), tag `iam_delete_service_account` - [iam/api-client/src/main/java/iam/snippets/DeleteServiceAccountKey.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/DeleteServiceAccountKey.java#L18), tag `iam_delete_key` - [iam/api-client/src/main/java/iam/snippets/RenameServiceAccount.java:18](https://github.com/GoogleCloudPlatform/java-docs-samples/blob/c4425de595b48e0b4ccb7e66b1a5ad246e632733/iam/api-client/src/main/java/iam/snippets/RenameServiceAccount.java#L18), tag `iam_rename_service_account`

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[Sita04]

@msilc Kindly fix the failed tests.