Update web-platform-tests to revision 0e6ff97259478d128d7ef74171b44a425f4e3d9b
Update web-platform-tests to revision b010fb85e75b94894d7f92aab2169d858955d661
Update to latest wptrunner.

--HG--
rename : testing/web-platform/harness/requirements.txt => testing/web-platform/harness/requirements_b2g.txt
Update wpt integration for latest wptrunner changes.
Update web-platform-tests to revision 95d351e59ad62441769022e198bc692b9ee5ae9d
Update wptrunner
Change web-platform-tests mozharness config to use config files.