Fixed bugs in gwpy.io.kerberos for python3
This PR fixes bugs in kerberos.kinit on python3, just a simple type issue with str vs bytes. I took this opportunity to make some small, backwards-compatible internal improvements to that method.
This PR fixes bugs in kerberos.kinit on python3, just a simple type issue with str vs bytes. I took this opportunity to make some small, backwards-compatible internal improvements to that method.