Bug 1228544 - [firefox-ui-tests] Disable usage of proxxy server. r=armenzg a=tomcat DONTBUILD

testing/mozharness/configs/firefox_ui_tests/qa_jenkins.py

@@ -16,6 +16,9 @@ config = {
         'PIP_TRUSTED_HOST': 'pypi.pub.build.mozilla.org',
     },
 
+    # Don't use any kind of proxxy support
+    'proxxy': {},
+
     # General local variable overwrite
     'exes': {
         'gittool.py': [