Include privileged apps with app zip file.

Include apps that appear under /system/priv-app
to also be included with the zip of all the apps.

Change-Id: If4687cf4c471877f11d78b68bad96f1842e49d87
Signed-off-by: rpcraig <rpcraig@tycho.ncsc.mil>
Merge remote-tracking branch 'th/kitkat' into kitkat