Defines whether the Instance should be automatically
restarted whenever it is terminated by Compute Engine (not
terminated by user).
Values:
RESTART_TYPE_UNSPECIFIED (0):
Unspecified behavior. This will use the
default.
AUTOMATIC_RESTART (1):
The Instance should be automatically
restarted whenever it is terminated by Compute
Engine.
NO_AUTOMATIC_RESTART (2):
The Instance isn't automatically restarted
whenever it is terminated by Compute Engine.