Add Controller Config TTLs Options For Boundary Cluster Resource/Data

[RyanDerr]

🛠️ Description

• Added new optional input values for configuring the controller's auth_token_time_to_live and auth_token_time_to_stale in a valid duration string (following time.Duration standards`
  • auth_token_time_to_live defaults to 7 days
  • auth_token_time_to_stale defaults to 1 day
  • When specifying either new attribute the other is required along side.

🏗️ Acceptance tests

• Are there any feature flags that are required to use this functionality?
• Have you added an acceptance test for the functionality being added?
• Have you run the acceptance tests on this branch?

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccXXX'
ok      github.com/hashicorp/terraform-provider-hcp/internal/provider/webhook/validator (cached) [no tests to run]
=== RUN   TestAccBoundaryCluster
--- PASS: TestAccBoundaryCluster (149.94s)
PASS
ok      github.com/hashicorp/terraform-provider-hcp/internal/providersdkv2      150.526s
...