An enumeration of possible severity level for an Alert
Policy.
Values:
SEVERITY_UNSPECIFIED (0):
No severity is specified. This is the default
value.
CRITICAL (1):
This is the highest severity level. Use this
if the problem could cause significant damage or
downtime.
ERROR (2):
This is the medium severity level. Use this
if the problem could cause minor damage or
downtime.
WARNING (3):
This is the lowest severity level. Use this
if the problem is not causing any damage or
downtime, but could potentially lead to a
problem in the future.
