Values:
STATE_UNSPECIFIED (0):
Not set.
PROVISIONING (1):
The PROVISIONING state indicates the cluster
is being registered.
RUNNING (2):
The RUNNING state indicates the cluster has
been register and is fully usable.
RECONCILING (3):
The RECONCILING state indicates that some
work is actively being done on the cluster, such
as upgrading software components.
STOPPING (4):
The STOPPING state indicates the cluster is
being de-registered.
ERROR (5):
The ERROR state indicates the cluster is in a
broken unrecoverable state.
DEGRADED (6):
The DEGRADED state indicates the cluster
requires user action to restore full
functionality.