Values:
STATE_UNSPECIFIED (0):
State is unspecified.
PROVISIONING (1):
Certificate Manager attempts to provision or renew the
certificate. If the process takes longer than expected,
consult the provisioning_issue field.
FAILED (2):
Multiple certificate provisioning attempts failed and
Certificate Manager gave up. To try again, delete and create
a new managed Certificate resource. For details see the
provisioning_issue field.
ACTIVE (3):
The certificate management is working, and a
certificate has been provisioned.
