SSL Certificate Validation

This adds support for validation of ssl certs returned by remote
servers over SSL. The --ca-file param represents the CA cert used
to sign the remote server's cert. Use --insecure if the remote
server is using a self-signed cert or you don't have the CA cert.

Related to bp glance-client-parity

Change-Id: I45253a6e2d88da599addfcc464571e62ae920166

glanceclient/v1/client.py

@@ -28,9 +28,8 @@ class Client(http.HTTPClient):
                             http requests. (optional)
     """
 
-    def __init__(self, endpoint, token=None, timeout=600, insecure=False):
+    def __init__(self, *args, **kwargs):
         """ Initialize a new client for the Images v1 API. """
-        super(Client, self).__init__(endpoint, token=token,
-                                     timeout=timeout, insecure=insecure)
+        super(Client, self).__init__(*args, **kwargs)
         self.images = images.ImageManager(self)
         self.image_members = image_members.ImageMemberManager(self)