Add test code for the rabbit driver

These are just a couple of silly sample scripts. Proper unit tests will
follow.

Change-Id: I6f27ae071c7e6f96059fd665d1163c89227833b9

doc/messaging/test-rabbit-client.py

@@ -0,0 +1,39 @@
+import eventlet
+
+eventlet.monkey_patch(os=False)
+
+import logging
+import socket
+
+from oslo.config import cfg
+
+from oslo import messaging
+
+_opts = [
+    cfg.StrOpt('host', default=socket.gethostname()),
+]
+
+CONF = cfg.CONF
+CONF.register_opts(_opts)
+
+LOG = logging.getLogger('client')
+
+logging.basicConfig(level=logging.DEBUG)
+
+CONF()
+CONF.log_opt_values(LOG, logging.DEBUG)
+
+class Client(object):
+
+    def __init__(self, transport):
+        target = messaging.Target(topic='topic')
+        self._client = messaging.RPCClient(transport, target)
+        super(Client, self).__init__()
+
+    def ping(self, ctxt):
+        return self._client.call(ctxt, 'ping')
+
+transport = messaging.get_transport(CONF, 'rabbit:///test')
+
+client = Client(transport)
+print client.ping({})

doc/messaging/test-rabbit-server.py

@@ -0,0 +1,52 @@
+
+import eventlet
+
+eventlet.monkey_patch(os=False)
+
+import logging
+import socket
+
+from oslo.config import cfg
+
+from oslo import messaging
+
+_opts = [
+    cfg.StrOpt('host', default=socket.gethostname()),
+]
+
+CONF = cfg.CONF
+CONF.register_opts(_opts)
+
+LOG = logging.getLogger('server')
+
+CONF()
+CONF.log_opt_values(LOG, logging.DEBUG)
+
+logging.basicConfig(level=logging.DEBUG)
+
+class Server(object):
+
+    def __init__(self, transport):
+        self.target = messaging.Target(topic='topic',
+                                       server=transport.conf.host)
+        self._server = messaging.get_rpc_server(transport,
+                                                self.target,
+                                                [self],
+                                                executor='eventlet')
+        super(Server, self).__init__()
+
+    def start(self):
+        self._server.start()
+
+    def wait(self):
+        self._server.wait()
+
+    def ping(self, ctxt):
+        LOG.info("PING")
+        return 'ping'
+
+transport = messaging.get_transport(CONF, 'rabbit:///test')
+
+server = Server(transport)
+server.start()
+server.wait()