Add ctx.config to sentry info.
Add ctx.config to sentry info.

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