tp-libvirt: Mass PEP8 Fixes

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
.travis.yml: Add PEP8 checks

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
tp-libvirt: Remaining PEP8 Fixes
virsh_connect: E714 fix

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Merge pull request #123 from autotest/travis-pep8

Travis pep8