In catastrophic scenario where grastate.dat cannot be found, it is
better to raise an exception rather than masking it with some
default values that may not be correct. This should now just cause
the pod to crashloop rather than silently failing - potentially allowing
other problems (e.g. bad images) to be exposed.
Change-Id: I4ff927dd85214ea906c20547b020e3fd7b02e2d5
Signed-off-by: Tin Lam <tin@irrational.io>
a9dfcbed76