Squashed commit of the following:

commit 406214fad214359fcf13fe8c7cd3f8f8faac5386
commit 85d1c9b0a41dd075eb2683b1a7de595ca3119614
commit 4aa5049b5ae25dee71a248238201611a466a13c4
commit 65a96974c80aea1fef88d78e218ecb665d8113e1
commit 22ea5863d1dfd628735b46cc7de51c0fd33251de

Refactoring

system/authorized_key.py

@@ -80,6 +80,15 @@ options:
     choices: [ "yes", "no" ]
     default: "no"
     version_added: "1.9"
+  validate_certs:
+     description:
+      - If C(no), SSL certificates will not be validated.  This should only
+        set to C(no) used on personally controlled sites using self-signed
+        certificates.  Prior to 2.0 the code defaulted to C(yes).
+    required: false
+    default: "yes"
+    choices: ["yes", "no"]
+    version_added: "2.0" 
 description:
     - "Adds or removes authorized keys for particular user accounts"
 author: "Ansible Core Team"
@@ -111,6 +120,11 @@ EXAMPLES = '''
                   key="{{ lookup('file', '/home/charlie/.ssh/id_rsa.pub') }}"
                   key_options='no-port-forwarding,from="10.0.1.1"'
 
+# Using validate_certs:
+- authorized_key: user=charlie
+                  key=https://github.com/user.keys
+                  validate_certs=no
+
 # Set up authorized_keys exclusively with one key
 - authorized_key: user=root key="{{ item }}" state=present
                    exclusive=yes
@@ -358,6 +372,7 @@ def enforce_state(module, params):
     state       = params.get("state", "present")
     key_options = params.get("key_options", None)
     exclusive   = params.get("exclusive", False)
+    validate_certs = params.get("validate_certs", True)
     error_msg   = "Error getting key from: %s"
 
     # if the key is a url, request it and use it as key source
@@ -460,6 +475,7 @@ def main():
            key_options = dict(required=False, type='str'),
            unique      = dict(default=False, type='bool'),
            exclusive   = dict(default=False, type='bool'),
+           validate_certs = dict(default=True, type='bool'),
         ),
         supports_check_mode=True
     )