Revert "rename qa-browsertests-{build,run}"

This reverts commits:
- 541dbc5c7325c78a12793d539425e0d6fe137858.
- e1305ccf19d96a255d22a2a150eff31673be7f9a.

Change-Id: I0d66e02fe561d0299a2c0561a3f59ef33eb7e02a