Add missing pyngus and python-qpid-proton for AMQP

These dependencies are required[1] for AMQP transport to work.
AMQP transport is currently available in Kolla using qdrouterd instead
of rabbitmq.

This commits make them available for source images.

[1] https://docs.openstack.org/oslo.messaging/ocata/AMQP1.0.html#platforms-and-packages

Change-Id: I124725521e0ee946bea1696ed35a7b919e4127b4
Closes-Bug: #1711331

docker/openstack-base/Dockerfile.j2

@@ -344,6 +344,7 @@ RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
         'pycadf',
         'pyinotify',
         'pymysql',
+        'pyngus',
         'pyparsing',
         'python-barbicanclient',
         'python-ceilometerclient',
@@ -365,6 +366,7 @@ RUN curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
         'python-neutronclient',
         'python-novaclient',
         'python-openstackclient',
+        'python-qpid-proton',
         'python-saharaclient',
         'python-swiftclient',
         'python-troveclient',