Werk #12251: unitrends_replication.py: support for Python 2/Python 3

In Python version 2 the agent plugin 'unitrends_replication' crashed with the error message:

Traceback (most recent call last):
  File "unitrends_replication.py", line 11, in <module>
    import urllib.request
ImportError: No module named request

The reason for this is that in previous Python versions "urllib.request" did not exist. This werk introduces an alternative handling of "urllib" for affected python versions.

To the list of all Werks