Add setting to change verifier visibility
Add setting to change verifier visibility

Added a setting that will be used to control whether the user can see the
package verification setting in the Setting app.

Bug: 7022814
Change-Id: Ifa096682e90c83760df5db12c4cf72e2f897db9c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base