Bug 1044033 - Video Encode: Flicker in the preview can be observed when we change the resolution in front camera
Revert "Revert "Revert "Bug 1039966 - Update gaiatest marionette_client to 0.8.1 and dependency moztest to >= 0.6"""

This reverts commit 81a89d663ab52ec7d7fbfb935ce4899694f05f8c.
Merge pull request #22312 from wilsonpage/1044033

Bug 1044033 - Video Encode: Flicker in the preview can be observed when we