Rename WebRTC suite to webrtc as the test_suite control file name is named.

TEST==site_utils/suite_enumerator.py -a . -l |grep webrtc
    site_utils/suite_enumerator.py -a . webrtc
    site_utils/suite_scheduler/suite_scheduler.py --sanity
    and make sure the file is there (filed crosbug.com/38231 as a follow up)
BUG=chromium-os:35496

Change-Id: I9d19ed583af0326fac4f744e2ccd0c703d70f93a
Reviewed-on: https://gerrit.chromium.org/gerrit/42005
Tested-by: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
3 files changed