conpaas: add travis.yml for automatic unit testing

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4881 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas: revert release-related changed introduced in r4881 by mistake

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4882 ef35cc4a-2640-4bbf-98bc-65920db7d8ae