Updated content for RDO Icehouse release packages

I made the following changes to update content for the RDO
Icehouse release packages:

1) Changed RDO repository package from
   rdo-release-icehouse-2.noarch.rpm to
   rdo-release-icehouse-3.noarch.rpm.
2) Added "python-glanceclient" to list of packages to install for
   glance.
3) Added "auth_protocol = http" and "auth_port = 35357" to
   glance-api.conf and glance-registry.conf.
4) Changed "rpc_backend = nova.openstack.common.rpc.impl_qpid" to
   "rpc_backend = qpid" in nova.conf on all nodes.
5) Removed "python-novaclient" from list of packages to install for
   neutron on the network node.
6) Added "python-neutronclient" to list of packages to install for
   neutron controller node.

Change-Id: I7f2456d5b3ece249abb774b0524fac7639d04ecb
Closes-Bug: #1312921
Added doc for storage policy support in Cinder

Storage policies are specified in the extra spec property
with key "vmware: storage_profile". This property is set
in the cinder volume type.

Change-Id: I6934ef1eae35e18f41f060298e52ff4987a99dd1
Closes-Bug: #1310691
Merge "Added doc for storage policy support in Cinder"
Merge "Updated content for RDO Icehouse release packages"