Defines the possible actions when a pod creation is denied by
an admission rule.
Values:
ENFORCEMENT_MODE_UNSPECIFIED (0):
Do not use.
ENFORCED_BLOCK_AND_AUDIT_LOG (1):
Enforce the admission rule by blocking the
pod creation.
DRYRUN_AUDIT_LOG_ONLY (2):
Dryrun mode: Audit logging only. This will
allow the pod creation as if the admission
request had specified break-glass.