cpsdirector.user.credit: include old_credit in the logs

git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4618 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-director: create_user has been moved to cpsdirector.user

git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4634 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-core: raise an exception on unkwown EC2 regions


git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4635 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-core: use the netaddr module only if IPOP has to be configured


git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4636 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-director: replace filter with list comprehension

git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4637 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas: do not fail if ganglia is not available, but complain loudly

git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4638 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
Started updating the paper


git-svn-id: svn+ssh://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4639 ef35cc4a-2640-4bbf-98bc-65920db7d8ae