Fix a bunch of potential security issues (secret leaking) (#1736)

* Fix a bunch of potential security issues (secret leaking).

* oneandone_server was already ok.

* Add more parameters for pagerduty_alert.

* Add more no_log=True.

plugins/modules/monitoring/stackdriver.py

@@ -152,7 +152,7 @@ def main():
 
     module = AnsibleModule(
         argument_spec=dict(  # @TODO add types
-            key=dict(required=True),
+            key=dict(required=True, no_log=True),
             event=dict(required=True, choices=['deploy', 'annotation']),
             msg=dict(),
             revision_id=dict(),