Backed out 5 changesets (bug 1102488) for stumbler-related robocop failures

Backed out changeset 05cf424592e6 (bug 1102488)
Backed out changeset 48fc328377d4 (bug 1102488)
Backed out changeset d2c14599cbab (bug 1102488)
Backed out changeset 8d1d39582e49 (bug 1102488)
Backed out changeset fa85f8d8b182 (bug 1102488)
Backed out changeset 4bcc69eb4a27 (bug 1102339) for stumbler-related robocop failures