Move shieldedvmconfig -> shieldedinstanceconfig due to rename.

[nat-henderson]

Release Note Template for Downstream PRs (will be copied)

compute: fix shielded instance config, which had been failing to apply due to a field rename on the GCP side.

Fixes hashicorp/terraform-provider-google#6900.
Fixes hashicorp/terraform-provider-google#6913.

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 4 files changed, 39 insertions(+), 39 deletions(-))
Terraform Beta: Diff ( 4 files changed, 39 insertions(+), 39 deletions(-))
TF Conversion: Diff ( 1 file changed, 3 insertions(+), 3 deletions(-))

[modular-magician]

I have triggered VCR tests based on this PR's diffs. See the results here: "https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=137652"

[modular-magician]

I have triggered VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccComputeInstanceTemplate_shieldedVmConfig2|TestAccComputeInstanceTemplate_shieldedVmConfig1|TestAccComputeInstance_shieldedVmConfig1|TestAccComputeInstance_shieldedVmConfig2|TestAccEndpointsService_basic|TestAccFolderIamAuditConfig_multiple|TestAccRedisInstance_redisInstancePrivateServiceExample|TestAccRedisInstance_redisInstanceFullExample You can view the result here: "https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=137653"

[nat-henderson]

Cool, looks like those tests pass in recording mode.