Please review the attached patch which addresses the following issues:

• dogtagpki Pagure Issue #2713 - Build failure due to Pylint issues

These changes were successfully compiled on a Fedora 27 machine with the following packages:

• python2-2.7.13-10.fc27.x86_64
• python3-3.6.1-7.fc27.x86_64
• pylint-1.7.1-1.fc27.noarch