faft: Better tagging on the SUITE field of FAFT tests

This CL tags FAFT tests according the following rules:
  faft: All FAFT tests, including BIOS and EC.

  faft_normal: All BIOS tests which runs under normal mode.
  faft_dev: All BIOS tests which runs under dev mode.
  faft_ec: All EC tests.
  faft_update: All firmware/kernel AU tests.
  faft_stress: All stress tests.

  faft_lv1: Basic BIOS tests which verify basic vboot functions.
  faft_lv2: Recovery BIOS tests which need external USB disk.
  faft_lv3: Corruption BIOS tests which modify firmware/kernel image.
            These tests may corrupt the system if any failure happens.
  faft_lv4: Advanced BIOS tests which verify not-so-critical features.

You can select the test suites like:
  run_remote_tests.sh suite:faft_lv1

If multiple suites are given, it will run all matched tests, like:
  run_remote_tests.sh suite:faft_lv1 suite:faft_lv2

BUG=chromium-os:32859
TEST=run_remote_tests.sh --remote=$DUT suite:faft_normal
     run_remote_tests.sh --remote=$DUT suite:faft_dev
     run_remote_tests.sh --remote=$DUT suite:faft_ec
     run_remote_tests.sh --remote=$DUT suite:faft_update
     run_remote_tests.sh --remote=$DUT -a "faft_iterations=10" suite:faft_stress
     run_remote_tests.sh --remote=$DUT suite:faft_lv1
     run_remote_tests.sh --remote=$DUT suite:faft_lv2
     run_remote_tests.sh --remote=$DUT suite:faft_lv3
     run_remote_tests.sh --remote=$DUT suite:faft_lv4

Change-Id: I141cb7b5b53184ee91d511c5e4a29fb4d17334d2
Reviewed-on: https://gerrit.chromium.org/gerrit/33068
Commit-Ready: Tom Wai-Hong Tam <waihong@chromium.org>
Reviewed-by: Tom Wai-Hong Tam <waihong@chromium.org>
Tested-by: Tom Wai-Hong Tam <waihong@chromium.org>
diff --git a/server/site_tests/firmware_CorruptBothFwBodyAB/control.dev b/server/site_tests/firmware_CorruptBothFwBodyAB/control.dev
index 3342ed5..7ac363d 100644
--- a/server/site_tests/firmware_CorruptBothFwBodyAB/control.dev
+++ b/server/site_tests/firmware_CorruptBothFwBodyAB/control.dev
@@ -6,7 +6,7 @@
 NAME = "firmware_CorruptFwBodyAB"
 PURPOSE = "Servo based both firmware body A and B corruption test"
 CRITERIA = "This test will fail if firmware does not enter recovery mode"
-SUITE = "faft"
+SUITE = "faft,faft_dev,faft_lv3"
 TIME = "LONG"
 TEST_CATEGORY = "Functional"
 TEST_CLASS = "firmware"