mds_thrash: PEP8-ize whitespace
mds_thrash: PEP8-ize whitespace

...so that I can edit the code in a python IDE without
it lighting up like a christmas tree!

Signed-off-by: John Spray <a0ab4ec42db5a70bbcbfc74d8971c0305528d92b@inktank.com>

tchaikov/teuthology,dreamhost/teuthology,zhouyuan/teuthology,zhouyuan/teuthology,robbat2/teuthology,michaelsevilla/teuthology,SUSE/teuthology,robbat2/teuthology,dmick/teuthology,yghannam/teuthology,ktdreyer/teuthology,ivotron/teuthology,michaelsevilla/teuthology,ktdreyer/teuthology,t-miyamae/teuthology,ivotron/teuthology,SUSE/teuthology,ceph/teuthology,t-miyamae/teuthology,tchaikov/teuthology,ceph/teuthology,caibo2014/teuthology,dmick/teuthology,dmick/teuthology,yghannam/teuthology,dreamhost/teuthology,caibo2014/teuthology,SUSE/teuthology