Values:
UNKNOWN (0):
The policy is in an unknown compliance state.
Refer to the field `compliance_state_reason` to learn the
exact reason for the policy to be in this compliance state.
COMPLIANT (1):
Policy is compliant.
The policy is compliant if all the underlying
resources are also compliant.
NON_COMPLIANT (2):
Policy is non-compliant.
The policy is non-compliant if one or more
underlying resources are non-compliant.