fix redefinition of region

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
remove unused import

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
rename variable to avoid collision

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
more statuses redefinition fixes

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
Merge pull request #238 from ceph/wip-pep8

Wip pep8