Cleanup dependencies for ironic-base

Rely on packagers for managing dependencies.

openstack-ironic-common now pulls the required packages:

https://github.com/openstack-packages/ironic/blob/rpm-master/openstack-ironic.spec

TrivialFix

Change-Id: Ib1d18c4e50a8786c29bf88d9b661905eb8b657c5

docker/ironic/ironic-base/Dockerfile.j2

@@ -4,14 +4,8 @@ MAINTAINER {{ maintainer }}
 {% if install_type == 'binary' %}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-# TODO(SamYaple): until packaging is fixed, all of this is required
-# http://pkgs.fedoraproject.org/cgit/openstack-ironic.git/tree/openstack-ironic.spec#n78
 RUN yum -y install \
         openstack-ironic-common \
-        python-oslo-log \
-        python-oslo-concurrency \
-        python-oslo-policy \
-        python-oslo-versionedobjects \
     && yum clean all
 
     {% endif %}