conpaas image creation scripts: print shell script name after successful creation


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5518 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas image creation scripts: python-mysqldb is required by Galera


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5519 ef35cc4a-2640-4bbf-98bc-65920db7d8ae