Bug 1480141 - Add task_regex for Marionette. r=ahal

--HG--
extra : rebase_source : 7a16868ef97624d36b6fed0e608acc97592f9603
extra : source : 936e7792e7557d02becaa2932be2c1f0dbb0df26

testing/mozbase/moztest/moztest/resolve.py

@@ -69,6 +69,7 @@ TEST_SUITES = {
         'aliases': ('mn',),
         'mach_command': 'marionette-test',
         'kwargs': {'tests': None},
+        'task_regex': ['marionette($|.*(-1|[^0-9])$)'],
     },
     'mochitest-a11y': {
         'aliases': ('a11y', 'ally'),