adb-remount-test: add an avc check

Check if adb remount resulted in any unlabeled references just before
rebooting the device.

Test: adb-remount-test.sh
Bug: 129319403
Bug: 132395411
Change-Id: Ica0c14da39773f615d9b5e4cfc4602bd50c70e4e
1 file changed