Install crowbar-openstack before neutron

neutron installation fails because it depends on crowbar-openstack cookbook
with the following error message:

    Installing barclamp neutron from /opt/dell/barclamps/neutron
    ERROR: /opt/dell/barclamps/neutron knife cookbook upload -o . neutron -V -k /etc/chef/webui.pem -u chef-webui upload failed.  Aborting; examine /var/log/crowbar/barclamp_install/neutron.log for more info.