Represents the accessibility state of a customer-managed KMS
key used for CMEK integration.
Values:
KMS_KEY_STATE_UNSPECIFIED (0):
Unspecified.
KMS_KEY_STATE_KEY_AVAILABLE (1):
The key is available for use, and dependent
resources should be accessible.
KMS_KEY_STATE_KEY_UNAVAILABLE (2):
The key is unavailable for an unspecified
reason. Dependent resources may be inaccessible.
