Fixed task/args.py docstrings.
Fixed task/args.py docstrings.

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