Make the PF provider configuration code process region selflinks in same way as the SDK provider

[SarahFrench]

Closes hashicorp/terraform-provider-google#15714

This PR isn't user facing so there's no release note. After this inconsistency was added to the provider users would have had region self links not shortened in the provider config, but the value would be shortened by the GetRegion functions used in resources. Redundancy between the two places prevented a bug being noticed.

Release Note Template for Downstream PRs (will be copied)

provider: Fixed an issue where the plugin-framework implementation of the provider handled default region values that were self-links differently to the SDK implementation. This issue is not believed to have affected users because of downstream functions that turn self links into region names.

[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 GA: Diff ( 3 files changed, 85 insertions(+), 10 deletions(-))
Terraform Beta: Diff ( 3 files changed, 85 insertions(+), 10 deletions(-))

[modular-magician]

Tests analytics

Total tests: 3080
Passed tests 2779
Skipped tests: 299
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]

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

Rerun these tests in REPLAYING mode to catch issues

$\textcolor{green}{\textsf{No issues found for passed tests after REPLAYING rerun.}}$

---

$\textcolor{green}{\textsf{All tests passed!}}$
View the build log or the debug log for each test

[zli82016]

LGTM

[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 GA: Diff ( 3 files changed, 85 insertions(+), 10 deletions(-))
Terraform Beta: Diff ( 3 files changed, 85 insertions(+), 10 deletions(-))

[modular-magician]

Tests analytics

Total tests: 3112
Passed tests 2791
Skipped tests: 314
Affected tests: 7

Action taken

Found 7 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

TestAccBigQueryDataTable_bigtable|TestAccContainerNodePool_withUpgradeSettings|TestAccContainerNodePool_withKubeletConfig|TestAccContainerCluster_withAddons|TestAccDataprocClusterIamPolicy|TestAccDataSourceGoogleServiceAccountIdToken_impersonation|TestAccWorkstationsWorkstationConfig_update

Get to know how VCR tests work

[modular-magician]

$\textcolor{green}{\textsf{Tests passed during RECORDING mode:}}$
TestAccBigQueryDataTable_bigtable[Debug log]
TestAccDataprocClusterIamPolicy[Debug log]
TestAccDataSourceGoogleServiceAccountIdToken_impersonation[Debug log]
TestAccWorkstationsWorkstationConfig_update[Debug log]

Rerun these tests in REPLAYING mode to catch issues

$\textcolor{green}{\textsf{No issues found for passed tests after REPLAYING rerun.}}$

---

$\textcolor{red}{\textsf{Tests failed during RECORDING mode:}}$
TestAccContainerNodePool_withUpgradeSettings[Error message] [Debug log]
TestAccContainerNodePool_withKubeletConfig[Error message] [Debug log]
TestAccContainerCluster_withAddons[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