When SSL is enabled in the neutron metadata agent the neutron metadata ns proxy isn't able to communicate to the neutron metadata agent

Issue

• When SSL is enabled in the neutron metadata agent the neutron metadata ns proxy isn't able to communicate to the neutron metadata agent via the unix domain socket and every request results in a BadStatusLine error:

2015-11-06 16:30:44.060 269669 INFO neutron.wsgi [-] 192.168.0.2 - - [06/Nov/2015 16:30:44] "GET /2009-04-04/meta-data/instance-id HTTP/1.1" 500 343 12.021586
2015-11-06 16:30:56.064 269669 INFO neutron.wsgi [-] (269669) accepted ('192.168.0.2', 50879)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy [-] Unexpected error.
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy Traceback (most recent call last):
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/dist-packages/neutron/agent/metadata/namespace_proxy.py", line 56, in __call__
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy req.body)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/dist-packages/neutron/agent/metadata/namespace_proxy.py", line 88, in _proxy_request
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy connection_type=agent_utils.UnixDomainHTTPConnection)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1569, in request
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1316, in _request
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy (response, content) = self._conn_request(conn, request_uri, method, body, headers)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1285, in _conn_request
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy response = conn.getresponse()
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/httplib.py", line 1051, in getresponse
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy response.begin()
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/httplib.py", line 415, in begin
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy version, status, reason = self._read_status()
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy File "/usr/lib/python2.7/httplib.py", line 379, in _read_status
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy raise BadStatusLine(line)
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy BadStatusLine: ''
2015-11-06 16:30:56.071 269669 ERROR neutron.agent.metadata.namespace_proxy

• It seems that the neutron metadata ns proxy does not support SSL for the communication.
• Can't add ssh-keys to instances.