Increase kDumpWaitTimeout 10x for target builds

New timeout is 100s, the old one was occasionally hit by overloaded
device. This caused a confusing crash in the barrier destructor
since not all the threads had went through the barrier yet.

Bug: 27334917
Change-Id: I5bcdaa39cfc104f3555f62b6117b417c8bf36e7a
1 file changed