Bug 1269560 - Use internal pypi mirror for Marionette harness tests; r=jlund

MozReview-Commit-ID: F3YoZkAyXAP

--HG--
extra : rebase_source : 752982b8ac4fef1eaf723abf5e9e523e8e6c4007

testing/mozharness/scripts/marionette_harness_tests.py

@@ -35,11 +35,10 @@ marionette_harness_tests_config_options = [
 ] + copy.deepcopy(virtualenv_config_options)
 
 marionette_harness_tests_config = {
-# TODO - mirror pytest dependencies in internal PyPI
-#    "find_links": [
-#        "http://pypi.pub.build.mozilla.org/pub",
-#    ],
-#    "pip_index": False,
+    "find_links": [
+        "http://pypi.pub.build.mozilla.org/pub",
+    ],
+    "pip_index": False,
     # relative to workspace
     "rel_src_dir": os.path.join("build", "src"),
 }

testing/taskcluster/tasks/branches/base_jobs.yml

@@ -455,6 +455,7 @@ tasks:
     when:
         file_patterns:
           - 'testing/marionette/harness/**'
+          - 'testing/mozharness/scripts/marionette_harness_tests.py'
   linux64-gcc:
     task: tasks/builds/linux64_gcc.yml
     root: true