Bug 2046941: fix new switch statements introduced by 2044114 r=releng-reviewers,ahal

The autoland one has been verified to have multiple truthy-branches (not allowed by JSON-e); the other one looks like it plausibly could too.

Differential Revision: https://phabricator.services.mozilla.com/D306277

.taskcluster.yml

@@ -260,6 +260,8 @@ tasks:
                                 extraArgs:
                                     $switch:
                                         'tasks_for == "cron"': '${cron.quoted_args}'
+                                        $default:
+                                            $switch:
                                                 'repository.project == "autoland"': '--no-verify'
                                                 'repository.project == "try"': '--no-verify --allow-parameter-override'
                                                 $default: ''
@@ -573,6 +575,8 @@ tasks:
                                             extraArgs:
                                                 $switch:
                                                     'tasks_for == "cron"': '${cron.quoted_args}'
+                                                    $default:
+                                                        $switch:
                                                             'repoType == "dev"': '--allow-parameter-override'
                                                             $default: ''
                                         in: