Add work around for loading vector drawable.

The copy of AppCompat inside the test app is linked against the R
class of the test app, and takes precedence when it instruments
PermissionController.

Fixes: 153792195
Test: atest Manage{Custom,Standard}PermissionsFragmentTest
Change-Id: I1ebefe311951e10d2f874bbf087cc9ef45db0c89