Android Security CTS/STS Oom Catcher App update

* Reorder memory trim switch cases so that it's easier to change
sensitivity.
* Make the Oom sensitivity less sensitive
* Fix an app crash on exit because of missing super.onDestroy()

Bug: 111403569
Test: run sts-tradefed -m StsHostTestCases
Change-Id: I629e440bf5001869f3318e96cedf164c891cd479
1 file changed