Add accelerators to workstation update masks

[siddharthab]

This was missed in #8490, and so in-place updates to accelerators are silently dropped.

Verified the issue by updating my workstation config with accelerators but the actual config did not change. On inspecting the debug logs, I noticed the update mask was wrong in the original PATCH REST request (but the request data was correct). Near the end of the log, the following warning message was present.

2023-09-16T04:38:23.768Z [WARN]  Provider "provider[\"registry.terraform.io/hashicorp/google-beta\"]" produced an unexpected new value for google_workstations_workstation_config.sidb, but we are tolerating it because it is using the legacy plugin SDK.
    The following problems may be the cause of any confusing errors from downstream operations:
      - .etag: was cty.StringVal("...."), but now cty.StringVal("...")
      - .host[0].gce_instance[0].accelerators: block count changed from 1 to 0

Release Note Template for Downstream PRs (will be copied)

workstations: fixed in-place updates of `host.gceInstance.accelerators` in `workstation_config`

[modular-magician]

Hello! I am a robot. It looks like you are a: Community Contributor Googler Core Contributor. Tests will require approval to run.

@trodge, a repository maintainer, has been assigned to review your changes. If you have not received review feedback within 2 business days, please leave a comment on this PR asking them to take a look.

You can help make sure that review is quick by doing a self-review and by running impacted tests locally.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform Beta: Diff ( 1 file changed, 3 insertions(+), 1 deletion(-))

[modular-magician]

Tests analytics

Total tests: 3070
Passed tests 2768
Skipped tests: 300
Affected tests: 2

Action taken

Found 2 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccWorkstationsWorkstationConfig_update|TestAccWorkstationsWorkstationConfig_updateHostDetails

Get to know how VCR tests work

[modular-magician]

$\textcolor{red}{\textsf{Tests failed during RECORDING mode:}}$
TestAccWorkstationsWorkstationConfig_update[Error message] [Debug log]
TestAccWorkstationsWorkstationConfig_updateHostDetails[Error message] [Debug log]

$\textcolor{red}{\textsf{Please fix these to complete your PR.}}$
View the build log or the debug log for each test

[siddharthab]

I don't have permissions to see the logs. I am running the failing tests in my personal project.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes:

Diff report

Your PR generated some diffs in downstreams - here they are.

Terraform Beta: Diff ( 1 file changed, 2 insertions(+), 1 deletion(-))

[modular-magician]

Tests analytics

Total tests: 3075
Passed tests 2771
Skipped tests: 299
Affected tests: 5

Action taken

Found 5 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccBigtableAppProfile_bigtableAppProfileMulticlusterExample|TestAccBigtableAppProfile_bigtableAppProfileAnyclusterExample|TestAccBigtableAppProfile_bigtableAppProfileSingleclusterExample|TestAccWorkstationsWorkstationConfig_update|TestAccWorkstationsWorkstationConfig_updateHostDetails

Get to know how VCR tests work

[modular-magician]

$\textcolor{green}{\textsf{Tests passed during RECORDING mode:}}$
TestAccBigtableAppProfile_bigtableAppProfileMulticlusterExample[Debug log]
TestAccBigtableAppProfile_bigtableAppProfileAnyclusterExample[Debug log]
TestAccBigtableAppProfile_bigtableAppProfileSingleclusterExample[Debug log]
TestAccWorkstationsWorkstationConfig_update[Debug log]
TestAccWorkstationsWorkstationConfig_updateHostDetails[Debug log]

Rerun these tests in REPLAYING mode to catch issues

$\textcolor{red}{\textsf{Tests failed when rerunning REPLAYING mode:}}$
TestAccBigtableAppProfile_bigtableAppProfileAnyclusterExample[Error message] [Debug log]
TestAccBigtableAppProfile_bigtableAppProfileMulticlusterExample[Error message] [Debug log]
TestAccBigtableAppProfile_bigtableAppProfileSingleclusterExample[Error message] [Debug log]

Tests failed due to non-determinism or randomness when the VCR replayed the response after the HTTP request was made.

Please fix these to complete your PR. If you believe these test failures to be incorrect or unrelated to your change, or if you have any questions, please raise the concern with your reviewer.

---

$\textcolor{red}{\textsf{Errors occurred during RECORDING mode. Please fix them to complete your PR.}}$
View the build log or the debug log for each test

[siddharthab]

Failing tests in BigTable seem unrelated to this change. Relevant tests like TestAccWorkstationsWorkstationConfig_update continue to pass.