Fix Terraform timeout during cluster creation

[rpgoog]

Moved the timeout configuration to the root level of Cluster.yaml. Timeout configuration in async.operation.timeouts is not accounted due to a bug - hashicorp/terraform-provider-google#28175

hypercomputecluster: fixed 20-minute timeout limit during `google_hypercomputecluster_cluster` resource creation

[github-actions]

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[SirGitsalot]

Running the tests now but that should just be a formality. I'll merge once they complete.

[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit 15db99d:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	2 files changed, 6 insertions(+), 6 deletions(-)
google-beta provider	View Diff	2 files changed, 6 insertions(+), 6 deletions(-)

Test report

Analytics

Total Tests	Passed	Skipped	Affected
5	4	1	0

Affected Service Packages

• hypercomputecluster

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