Undefined name: from six.moves import raw_input

__raw_input()__ was removed in Python 3 in favor of a rewritten version of __input()__.

[flake8](http://flake8.pycqa.org) testing of https://github.com/fedora-infra/datanommer on Python 3.7.1

$ __flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics__
```
./tools/active-contrib.py:42:16: F821 undefined name 'raw_input'
    username = raw_input("FAS username: ")
               ^
./tools/gource/datanommer2gitlog.py:85:16: F821 undefined name 'cmp'
        return cmp(a['timestamp'], b['timestamp'])
               ^
2     F821 undefined name 'raw_input'
2
```

tools/active-contrib.py

@@ -36,6 +36,8 @@
 import getpass
 import pprint
 
+from six.moves import raw_input
+
 
 def prompt_creds():
     print("I need to query FAS to get the list of packagers..")