Bug: upgrading auth0 provider for the account tf

[jaskaransarkaria]

Background

https://github.com/ministryofjustice/cloud-platform-infrastructure/blob/ee2997721c28a7e54f4565103985950d0ca15c63/terraform/aws-accounts/cloud-platform-aws/account/versions.tf#L6

We can't upgrade this possibly because of this issue https://github.com/alexkappa/terraform-provider-auth0/issues/157

Definition of done

• [ ] readme has been updated
• [ ] user docs have been updated
• [ ] another team member has reviewed
• [ ] smoke tests are green
• [ ] prepare demo for the team

Reference

How to write good user stories

[kyphutruong]

This is the error when trying to bump auth0 provider from 0.50.2 to 1.7.3

│ Error: Failed to decode resource from state
│ 
│ Error decoding "module.sso.auth0_client.saml" from previous state: missing expected [
╵
╷
│ Error: missing expected [
│ 
│   with auth0_client.opensearch_app_logs,
│   on app-opensearch.tf line 399, in resource "auth0_client" "opensearch_app_logs":
│  399:   addons {
│ 
╵
╷
│ Error: missing expected [
│ 
│   with auth0_client.opensearch,
│   on modsec-opensearch.tf line 218, in resource "auth0_client" "opensearch":
│  218:   addons {
│ 
╵
╷
│ Error: missing expected [
│ 
│   with module.sso.auth0_client.saml,
│   on .terraform/modules/sso/auth0.tf line 12, in resource "auth0_client" "saml":
│   12:   addons {
│ 

Also the same error on the TF plan check in the dependabot PR: https://github.com/ministryofjustice/cloud-platform-infrastructure/pull/3540

[kyphutruong]

Possible fix: Migration guide

[kyphutruong]

Need to test the steps in the Migration guide, which involves tinkering with the state file. The best place to test is in the ephemeral test account

[kyphutruong]

Blocked until https://github.com/ministryofjustice/cloud-platform/issues/6519 is done

[kyphutruong]

Reproduced same kind of errors when trying to upgrade auth0 provider in ephemeral test account:

│ Error: Failed to decode resource from state
│ 
│ Error decoding "module.sso.auth0_client.saml" from previous state: missing expected [
╵
╷
│ Error: missing expected [
│ 
│   with module.sso.auth0_client.saml,
│   on .terraform/modules/sso/auth0.tf line 12, in resource "auth0_client" "saml":
│   12:   addons {