Fix sql VCR test failure in replaying

[shuyama1]

This should prevent TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade from failing in VCR replaying mode. The test takes about 30 mins to run in recording.

Reason that TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade failed in VCR replaying currently:
The test is using a config testGoogleSqlDatabaseInstance_basic2 which does have the name set.
If the name of the sql instance is not explicitly specified, Terraform will randomly generate one during creation, and therefore it creates randomness and makes the test failed in replaying.

The other place testGoogleSqlDatabaseInstance_basic2 used is in test TestAccSqlDatabaseInstance_basicInferredName. The test is intentionally set up to test if the name can be generated when it's not specified by users and it's skipped in VCR.

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).
• Generated Terraform, and ran make test and make lint to ensure it passes unit and linter tests.
• 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).
• Ran relevant acceptance tests (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! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 7 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 1 file changed, 7 insertions(+), 6 deletions(-))
TF Validator: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))

[modular-magician]

Tests analytics

Total tests: 2192
Passed tests 1939
Skipped tests: 240
Failed tests: 13

Action taken

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

TestAccComputeVpnTunnel_vpnTunnelBetaExample|TestAccComputeRouterInterface_basic|TestAccComputeInstance_soleTenantNodeAffinities|TestAccComputeGlobalForwardingRule_externalTcpProxyLbMigBackendExample|TestAccComputeForwardingRule_forwardingRuleExternallbExample|TestAccComputeForwardingRule_internalTcpUdpLbWithMigBackendExample|TestAccComputeForwardingRule_networkTier|TestAccComputeForwardingRule_update|TestAccComputeForwardingRule_forwardingRuleRegionalHttpXlbExample|TestAccClouddeployDeliveryPipeline_DeliveryPipeline|TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade|TestAccComputeFirewallPolicy_update|TestAccComputeFirewallPolicyRule_update

[modular-magician]

Tests passed during RECORDING mode:
TestAccComputeVpnTunnel_vpnTunnelBetaExample[Debug log]
TestAccComputeRouterInterface_basic[Debug log]
TestAccComputeGlobalForwardingRule_externalTcpProxyLbMigBackendExample[Debug log]
TestAccComputeForwardingRule_forwardingRuleExternallbExample[Debug log]
TestAccComputeForwardingRule_internalTcpUdpLbWithMigBackendExample[Debug log]
TestAccComputeForwardingRule_networkTier[Debug log]
TestAccComputeForwardingRule_update[Debug log]
TestAccComputeForwardingRule_forwardingRuleRegionalHttpXlbExample[Debug log]
TestAccClouddeployDeliveryPipeline_DeliveryPipeline[Debug log]
TestAccComputeFirewallPolicy_update[Debug log]
TestAccComputeFirewallPolicyRule_update[Debug log]

Tests failed during RECORDING mode:
TestAccComputeInstance_soleTenantNodeAffinities[Error message] [Debug log]
TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade[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! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 1 file changed, 11 insertions(+), 6 deletions(-))
Terraform Beta: Diff ( 1 file changed, 11 insertions(+), 6 deletions(-))
TF Validator: Diff ( 2 files changed, 3 insertions(+), 3 deletions(-))

[modular-magician]

Tests analytics

Total tests: 2193
Passed tests 1950
Skipped tests: 240
Failed tests: 3

Action taken

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

TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade|TestAccComputeInstance_soleTenantNodeAffinities|TestAccCGCSnippet_eventarcWorkflowsExample

[modular-magician]

Tests passed during RECORDING mode:
TestAccSqlDatabaseInstance_mysqlMajorVersionUpgrade[Debug log]

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

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