update_verifier should be in the cache group, not 'class'.
Also use PLOG instead of LOG if care_map.txt cannot be opened.
Bug: 36818743
Test: boot sailfish
Test: fake OTA on sailfish and verify update_verifier reads care_package
Change-Id: I0ec844cac5ef5c63b18ebee90160854fd84ee829
Highest ioprio is 0 for CFQ and we should run update_verifier with that.
Tested on device and showing boottime decreased.
Bug: 36511808
Bug: 36102163
Test: Boot marlin
Change-Id: Iddd925951d976e21014b61e5590bcdae3cea8470
Raise the priority and ioprio of update_verifier and launch with
exec_start. This saves ~100ms of time before `class_start main` is executed.
Bug: 36511808
Bug: 36102163
Test: Boot bullhead
Test: Verify boottime decrease on sailfish
Change-Id: I944a6c0d4368ead5b99171f49142da2523ed1bdd