Nitrate

- Do not use the spec release for the pip version
- Properly handle string bug identifiers
- Enable basic sanity and integration tests

Nitrate Bug id can be string (for e.g. Jira)

* Release python-nitrate-1.7
* Fix float as a parameter of the listed() function
* Solve DeprecationWarning
* Make examples usable with Python 3
* Enable copr builds on commits in the master branch
* Merge the Packit config and Makefile changes
* Enable custom create archive for packit
* Porting cache.py to Python 3

- Handle wrongly encoded messages in log [fix 20]
- Make teiid Python 3 compatible [fix 13]
- Better solving the do_command() bug
- Bringing back eval() - workaround for XMLRPC
- Output nicer tracebacks on connection failures
- Enable automated python dependecies generator
- Last spec file changes for RHEL7 (hopefully)
- For older releases build both python2 and python3

- Update specfile to new python packaging standards
- Performance improvement for TestPlan.sortkey
- Port to python-gssapi from pykerberos
- Make TestRun errata_id default to None