Fix StagefrightTests

Update the process names to regex so that they match hidl processes.

Bug: 113170203
Test: run stagefright against an expected failure
Change-Id: Icf03f341f55f97a43db5e8dcdf3da75c24e041ef
Merged-In: Icf03f341f55f97a43db5e8dcdf3da75c24e041ef
2 files changed