Move enable-verity/disable-verity out of adb to a helper binary.

Test: adb enable-verity
Test: adb disable-verity
Test: adb shell enable-verity
Test: adb shell disable-verity
Test: fs_mgr/tests/adb-remount-test.sh
Change-Id: I0f21a6678b332cc9166d912aa38952d50d924566
7 files changed