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

(cherry picked from commit 74bdab0b)

Change-Id: I24cf6eb6858ad93a47446aa6bbc18942a71b191e