Bug#982417: Python louvain packages naming confusion.

[Diane Trout <diane@ghic.org>]

> 
> In the short term I recommend fixing this by adding a file to the
> Debian python-louvain package named "debian/tests/autopkgtest-pkg-
> python.conf" with the contents "import_name = community"
> 

How about renaming the current python3-louvain package to 
python3-community-louvain using a normal transition package.

(I got the new name from wRAR pointing out that upstream even suggests
"import community as community_louvain")

Then I can submit the other louvain package using a binary package name
of python3-louvain-igraph.

Eventually we can just drop the python3-louvain package in favor of the
more specific names.

Diane