spanner: updated tests to allow VCR

[wyardley]

Followup to #12152

Updated all tests (other than the one testing random instance name generation itself) to use name as well as display_name, and to use tf-test and a random suffix, to follow the regular name generation pattern (both for sweepers, and to make VCR function)

Use smaller size for economy on some tests.

Release Note Template for Downstream PRs (will be copied)

See Write release notes for guidance.

[github-actions]

Hello! I am a robot. Tests will require approval from a repository maintainer to run.

@SarahFrench, 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.

google provider: Diff ( 3 files changed, 38 insertions(+), 33 deletions(-))
google-beta provider: Diff ( 3 files changed, 38 insertions(+), 33 deletions(-))

[modular-magician]

Tests analytics

Total tests: 35
Passed tests: 20
Skipped tests: 6
Affected tests: 9

Click here to see the affected service packages

• spanner

Action taken

Found 9 affected test(s) by replaying old test recordings. Starting RECORDING based on the most recent commit. Click here to see the affected tests

• TestAccDataSourceSpannerInstance_basic
• TestAccSpannerDatabase_deletionProtection
• TestAccSpannerInstance_basic
• TestAccSpannerInstance_basicWithAutoscalingUsingNodeConfig
• TestAccSpannerInstance_basicWithAutoscalingUsingNodeConfigUpdate
• TestAccSpannerInstance_basicWithAutoscalingUsingProcessingUnitConfig
• TestAccSpannerInstance_basicWithAutoscalingUsingProcessingUnitConfigUpdate
• TestAccSpannerInstance_update
• TestAccSpannerInstance_virtualUpdate

Get to know how VCR tests work

[modular-magician]

🟢 Tests passed during RECORDING mode:
TestAccDataSourceSpannerInstance_basic [Debug log]
TestAccSpannerDatabase_deletionProtection [Debug log]
TestAccSpannerInstance_basic [Debug log]
TestAccSpannerInstance_basicWithAutoscalingUsingNodeConfig [Debug log]
TestAccSpannerInstance_basicWithAutoscalingUsingNodeConfigUpdate [Debug log]
TestAccSpannerInstance_basicWithAutoscalingUsingProcessingUnitConfig [Debug log]
TestAccSpannerInstance_basicWithAutoscalingUsingProcessingUnitConfigUpdate [Debug log]
TestAccSpannerInstance_update [Debug log]
TestAccSpannerInstance_virtualUpdate [Debug log]

🟢 No issues found for passed tests after REPLAYING rerun.

---

🟢 All tests passed!

View the build log or the debug log for each test

[SarahFrench]

Thanks for addressing these issues!

[SarahFrench]

(Waiting before merging as there's currently a blocker on merging new contributions)