Update required packages for ryu

Sync with the recent reality.

Change-Id: I4c37d09e511f3763d2267267815387bd5c825e0e
Closes-Bug: 1287541
Add n-obj to stop_nova

Add missing nova-object service to nova services list

Change-Id: Ib26204b69356ad030ba3d03f095993370fbb2676
Merge "Update required packages for ryu"
Use the python-pyOpenSSL package openSUSE

Recent pyOpenSSL releases when installed from pip depend on
cryptography>=0.2.1, which itself depends on cffi>=0.8. That is conflicting
with the python-cffi (0.7.2) package on openSUSE-13.1 which is required by the
installed python-xattr.

Change-Id: I721ce5288d150a3b01fb2558f7ca86028d734138
Merge "Add n-obj to stop_nova"
Merge "Use the python-pyOpenSSL package openSUSE"
Merge branch 'master' of https://github.com/openstack-dev/devstack