Move service and seapp contexts to /system and /vendor

Test: Build and boot Marlin and Bullhead.
Test: Contexts split between /system and /vendor on Marlin.
      Remains stored in / on Bullhead.
Bug: 36002816
Bug: 36002427

Change-Id: I922bcbc0cc2c08e312cf942ee261951edfa8d4e2
1 file changed