Run tests for base class in subclass tests
Run tests for base class in subclass tests

Also remove test_defaults() since it was a bad idea.

Signed-off-by: Zack Cerza <f801c831581d4150a2793939287636221d62131e@inktank.com>

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