CtsVerifier Suid File Scanner

Bug 2732160

Create an activity for the CtsVerifier (a collection of manual tests)
that scans for suid files. This was not made into unit test, because
it is not comprehensive enough to guarantee that all suid files are
found. Furthermore, there is no way to say what the official list of
binaries should be permitted across all Android devices.

Here is a shortcut command for developing just this activity and
avoiding the welcome and manual test list screens:

mmm cts/apps &&
adb install -r out/target/product/generic/data/app/CtsVerifier.apk &&
adb shell "am start -n com.android.cts.verifier/.suid.SuidFilesActivity"

Change-Id: I98521bea565b9315a41c8dc005d8adfd9178621b
9 files changed