Validate SSL certs accessed through urllib*

* Adds another module utility file which generalizes the
  access of urls via the urllib* libraries.
* Adds a new spec generator for common arguments.
* Makes the user-agent string configurable.

Fixes #6211

library/notification/grove

@@ -41,8 +41,6 @@ EXAMPLES = '''
     message=deployed {{ target }}
 '''
 
-import urllib
-
 BASE_URL = 'https://grove.io/api/notice/%s/'
 
 # ==============================================================
@@ -57,7 +55,10 @@ def do_notify_grove(module, channel_token, service, message, url=None, icon_url=
     if icon_url is not None:
         my_data['icon_url'] = icon_url
 
-    urllib.urlopen(my_url, urllib.urlencode(my_data))
+    data = urllib.urlencode(my_data)
+    response, info = fetch_url(module, my_url, data=data)
+    if info['status'] != 200:
+        module.fail_json(msg="failed to send notification: %s" % info['msg'])
 
 # ==============================================================
 # main