Removed mix tabs and spaces, and fixed PEP8 conformance.

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5224 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
Modifications according to comments

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5227 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas.core.controller: add {create,attach,destroy}_volume methods 


git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5228 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas.core.manager: add volume-related methods

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5229 ef35cc4a-2640-4bbf-98bc-65920db7d8ae
conpaas: add basic unit tests for conpaas.core.manager

git-svn-id: svn://svn.forge.objectweb.org/svnroot/contrail/trunk/conpaas@5230 ef35cc4a-2640-4bbf-98bc-65920db7d8ae