Make sure osd_scrub_pgs gets called if healthy call fails.
Make sure osd_scrub_pgs gets called if healthy call fails.

Fixes: 7198
Signed-off-by: Warren Usui <021fe6d8989d7bdb08c8700d8c426ea80a140097@inktank.com>

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