conpaas: release 1.2.0-rc4

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4979 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas: update version number to 1.2.0 in documentation files


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@4982 ef35cc4a-2640-4bbf-98bc-65920db7d8ae