Edit target/excluded browser annotations for ios-driver

Eventually IPAD_IOS_DRIVER and IPHONE_IOS_DRIVER will become the standard IPAD
and IPHONE and we can remove reference to ios-driver, but for now keep both
around until the ios-driver autobuild stabilizes and test failures are
addressed.

@bug W-2164325@
@rev gtorres@
Merging origin/tbliss/master-pending-ios-driver-test-fixes into master