Make testrunner.py check ART_TEST_RUN_TEST_SKIP

Bug: 35407301
Test: ./test/testrunner/testrunner.py --host -t 071-dexfile
Test: ART_TEST_RUN_TEST_SKIP=071-dexfile-map-clean \
      ./test/testrunner/testrunner.py --host -t 071-dexfile-map-clean

Test: ./test/testrunner/testrunner.py --skip 071-dexfile-map-clean \
                                      --host -t 071-dexfile-map-clean
Change-Id: I4d13d081e37221b3861962b9e6fc1d7d5af451f6
2 files changed