Add support to configure specific bootstrap nodes.

The main use case is when deploying ConPaaS in a private network with a strict firewall.
It may also be useful for developping and testing.



git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5125 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
Log the exception message raised when failing to set the MySQL password.

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5126 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas.core.controller: at least one default cloud has to be defined


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5128 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas-core: add empty script for dummy cloud


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5129 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas.core.controller: add tests


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5130 ef35cc4a-2640-4bbf-98bc-65920db7d8ae