`azuredevops_group_entitlement` `azuredevops_user_entitlement` - Add timeout and update test case

[xuzhang3]

All Submissions:

• [x] Have you added an explanation of what your changes do and why you'd like us to include them?
• [x] I have updated the documentation accordingly.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.
• [x] My code follows the code style of this project.
• [x] I ran lint checks locally prior to submission.
• [x] Have you checked to ensure there aren't other open PRs for the same update/change?

What about the current behavior has changed?

Issue Number:

=== RUN   TestAccUserEntitlement_Create
=== PAUSE TestAccUserEntitlement_Create
=== CONT  TestAccUserEntitlement_Create
--- PASS: TestAccUserEntitlement_Create (26.67s)
PASS
ok      github.com/microsoft/terraform-provider-azuredevops/azuredevops/internal/acceptancetests        32.320s

=== RUN   TestAccGroupEntitlement_Create
=== PAUSE TestAccGroupEntitlement_Create
=== RUN   TestAccGroupEntitlement_AAD_Create
=== PAUSE TestAccGroupEntitlement_AAD_Create
=== CONT  TestAccGroupEntitlement_Create
=== CONT  TestAccGroupEntitlement_AAD_Create
--- PASS: TestAccGroupEntitlement_Create (12.26s)
--- PASS: TestAccGroupEntitlement_AAD_Create (13.94s)
PASS
ok      github.com/microsoft/terraform-provider-azuredevops/azuredevops/internal/acceptancetests        21.372s

Does this introduce a change to go.mod, go.sum or vendor/?

• [ ] Yes
• [x] No

Does this introduce a breaking change?

• [ ] Yes
• [x] No

Any relevant logs, error output, etc?

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