Bootstrap network cleanup

[roaks3]

fixes hashicorp/terraform-provider-google#13275
fixes hashicorp/terraform-provider-google#13276

This change clarifies the way bootstrapped networks are intended to be used, and cleans up areas where we currently use them. In short, we almost always use these to avoid quota issues with service_networking_connections, and when we do that, we cannot be reusing the testId across tests.

NOTE: After merging, we will want to clean up the bootstrapped networks that are no longer in use from all projects:

• alloydb
• vertex

If this PR is for Terraform, I acknowledge that I have:

• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Generated Terraform providers, and ran make test and make lint in the generated providers to ensure it passes unit and linter tests.
• Ran relevant acceptance tests using my own Google Cloud project and credentials (If the acceptance tests do not yet pass or you are unable to run them, please let your reviewer know).
• Read the Release Notes Guide before writing my release note below.

Release Note Template for Downstream PRs (will be copied)

[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 ( 6 files changed, 139 insertions(+), 11 deletions(-))
Terraform Beta: Diff ( 6 files changed, 139 insertions(+), 11 deletions(-))
TF Validator: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))
TF OiCS: Diff ( 4 files changed, 140 insertions(+))

[modular-magician]

Tests analytics

Total tests: 2481
Passed tests 2220
Skipped tests: 255
Failed tests: 6

Action taken

Triggering VCR tests in RECORDING mode for the tests that failed during VCR. Click here to see the failed tests

TestAccFirebaserulesRelease_BasicRelease|TestAccAlloydbBackup_update|TestAccAlloydbBackup_alloydbBackupFullExample|TestAccAlloydbBackup_alloydbBackupBasicExample|TestAccVertexAIEndpoint_vertexAiEndpointNetwork|TestAccWorkstationsWorkstationConfig_workstationConfigEncryptionKeyExample

[modular-magician]

Tests passed during RECORDING mode:
TestAccFirebaserulesRelease_BasicRelease[Debug log]
TestAccAlloydbBackup_update[Debug log]
TestAccAlloydbBackup_alloydbBackupFullExample[Debug log]
TestAccAlloydbBackup_alloydbBackupBasicExample[Debug log]
TestAccVertexAIEndpoint_vertexAiEndpointNetwork[Debug log]

Tests failed during RECORDING mode:
TestAccWorkstationsWorkstationConfig_workstationConfigEncryptionKeyExample[Error message] [Debug log]

Please fix these to complete your PR
View the build log or the debug log for each test

[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 ( 6 files changed, 139 insertions(+), 11 deletions(-))
Terraform Beta: Diff ( 6 files changed, 139 insertions(+), 11 deletions(-))
TF Validator: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))
TF OiCS: Diff ( 4 files changed, 140 insertions(+))

[modular-magician]

Tests analytics

Total tests: 2492
Passed tests 2232
Skipped tests: 258
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_workstationConfigEncryptionKeyExample|TestAccFirebaserulesRelease_BasicRelease

Get to know how VCR tests work

[modular-magician]

Tests passed during RECORDING mode:
TestAccFirebaserulesRelease_BasicRelease[Debug log]

Tests failed during RECORDING mode:
TestAccWorkstationsWorkstationConfig_workstationConfigEncryptionKeyExample[Error message] [Debug log]

Please fix these to complete your PR
View the build log or the debug log for each test

[rileykarson]

stray thought: I wonder if we could derive a name from t rather than require a unique one be supplied by the author. Would guard against copy-paste issues.

[roaks3]

That's a great idea! Agreed that copy-paste is going to be an issue moving forward.

[rileykarson]

note for myself: we use skip_test so this is just noise

[roaks3]

Yep, sorry, should have made a note on this one