Bug 1381577 - Part E; Add assertion that there is no space in each action or option passed to mozharness tests. r=dustin

Land date changes to support windows nightlies onto central

This is needed because on Linux these arrays are joined by a space then passed to the shell as 'for foo in $bar' which will treat spaces as valid delimiters, whereas for windows workers the structure is evaluated completely in python, which means a single value with spaces won't generate the correct command output. Enforcing this prevents mistakes with yaml syntax going unnoticed.

MozReview-Commit-ID: 3U4orzyiBuf

--HG--
extra : rebase_source : 6fb7671f70d2169225d36c0c728324b01b3f055a

taskcluster/taskgraph/transforms/job/mozharness.py

@@ -242,9 +242,11 @@ def mozharness_on_generic_worker(config, job, taskdesc):
         mh_command.append(r'--skip-buildbot-actions')
     mh_command.append(r'--work-dir %cd:Z:=z:%\build')
     for action in run.get('actions', []):
+        assert ' ' not in action
         mh_command.append('--' + action)
 
     for option in run.get('options', []):
+        assert ' ' not in option
         mh_command.append('--' + option)
     if run.get('custom-build-variant-cfg'):
         mh_command.append('--custom-build-variant')