Bump down bridge space requirement.
Bump down bridge space requirement.

Jenkins server only has 1.9G of /dev/shm space.
Plus, our requirements are much better after compression.

Change-Id: I4ef0afcfd2ce3a8b04d65cbf9da50a9114c0edb7

s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim