varlink images

implement varlink image functions for working with libpod with the exception of a
couple due to incompletions on the libpod side of things (build).

also, created a first pass at a libpodpy package which will stand as a client to
working with libpod's varlink methods using python.

Signed-off-by: baude <bbaude@redhat.com>

Closes: #669
Approved by: baude

contrib/libpodpy/client.py

@@ -0,0 +1,45 @@
+
+from varlink import Client
+from libpodpy.images import Images
+from libpodpy.system import System
+from libpodpy.containers import Containers
+
+class LibpodClient(object):
+
+
+    """
+    A client for communicating with a Docker server.
+
+    Example:
+
+        >>> from libpodpy import client
+        >>> c = client.LibpodClient("unix:/run/podman/io.projectatomic.podman")
+
+    Args:
+        Requires the varlink URI for libpod
+    """
+
+    def __init__(self, varlink_uri):
+        c = Client(address=varlink_uri)
+        self.conn = c.open("io.projectatomic.podman")
+
+    @property
+    def images(self):
+        """
+        An object for managing images through libpod
+        """
+        return Images(self.conn)
+
+    @property
+    def system(self):
+        """
+        An object for system related calls through libpod
+        """
+        return System(self.conn)
+
+    @property
+    def containers(self):
+        """
+        An object for managing containers through libpod
+        """
+        return Containers(self.conn)