Updated neutron client sha

This PR changes the sha of the neutron client. This change is needed so that
we are not attempting to install a neutron client for juno which is known to
be broken.

Closes Issues https://github.com/rcbops/ansible-lxc-rpc/issues/350
Merge pull request #352 from cloudnull/neutron-client-update-juno

Updated neutron client sha (proposed/juno)