The openstack-tox-docs job started failing with the following error:

    ! LaTeX Error: File `tgtermes.sty' not found.

This change adds the required font package to the bindep doc profile.

Change-Id: I9acf8fd03150b9cc03a011364f0c45929b9a9f87

The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.

Ignore bashate failure on one-liner loops.

Add pcre devel packages to fix failing pep8 jobs.

Change-Id: I3442174b378cc6e361550fcb9b32a62f61fa7972