Fix remaining quantum references to neutron

There was one reference to quantumclient instead of neutronclient in the code
and a few other in doc and comments.
Projet openstack-installer was renamed

Without this patch, the build-server cloud-init script fails like this.

/dev/fd/63: line 1: syntax error near unexpected token `<'
/dev/fd/63: line 1: `<html><body>You are being <a href="https://raw.github.com/CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder/master/install-scripts/setup.sh">redirected</a>.</body></html>'
Merge pull request #5 from ctrlaltdel/master

Fix remaining quantum references to neutron