[Output Only] The status of the instantSnapshot. This can be
CREATING, DELETING, FAILED, or READY.
Values:
UNDEFINED_STATUS (0):
A value indicating that the enum field is not
set.
CREATING (455564985):
InstantSnapshot creation is in progress.
DELETING (528602024):
InstantSnapshot is currently being deleted.
FAILED (455706685):
InstantSnapshot creation failed.
READY (77848963):
InstantSnapshot has been created
successfully.