conpaas: xtreemfs: some fixes for the snapshot/download_manifest feature

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5552 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas: new AMI ids for ConPaaS 1.3.0


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5553 ef35cc4a-2640-4bbf-98bc-65920db7d8ae