Add Automated Root Rotation Parameters to AWS Auth/Secrets and DB Secrets

[vinay-gopalan]

Description

Adds new automated root rotation parameters that will be available as part of Vault 1.19 Enterprise to the following resources:

• vault_aws_secret_backend
• vault_database_secret_backend_connection
• vault_aws_auth_backend_client

Checklist

• Added CHANGELOG entry (only for user-facing changes)
• Acceptance tests where run against all supported Vault Versions

Output from acceptance testing:

$ make testacc TESTARGS='-run=TestAccAWSSecretBackend_automatedRotation'
=== RUN   TestAccAWSSecretBackend_automatedRotation
    resource_aws_secret_backend_test.go:167: Vault server version "1.20.0-beta1+ent"
--- PASS: TestAccAWSSecretBackend_automatedRotation (1.87s)
PASS