Use the hostname from the Transport for GSSAPI Authentication

Previously, the AMQP 1.0 driver did not pass the proper hostname to
pyngus.  This prevented GSSAPI authentication from working properly.

Change-Id: Ibc6678e7cbae6dd5108d1650dbb8ddf837aa3648
Closes-Bug: #1503258

oslo_messaging/_drivers/protocols/amqp/controller.py

@@ -460,7 +460,7 @@ class Controller(pyngus.ConnectionEventHandler):
     def _do_connect(self):
         """Establish connection and reply subscription on processor thread."""
         host = self.hosts.current
-        conn_props = {}
+        conn_props = {'hostname': host.hostname}
         if self.idle_timeout:
             conn_props["idle-time-out"] = float(self.idle_timeout)
         if self.trace_protocol:

tox.ini

@@ -5,6 +5,7 @@ envlist = py34,py27,pep8
 setenv =
     VIRTUAL_ENV={envdir}
     OS_TEST_TIMEOUT=30
+    PN_TRACE_FRM=1
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 commands = python setup.py testr --slowest --testr-args='{posargs}'