A charm that uses FRR instead of Quagga is now published under:
https://charmhub.io/osci-frr
For our purposes FRR is a drop-in replacement of Quagga but the point
of a change is to remove Quagga references for clarity.
Add Python 3.8 env in Travis CI test matrix.
At present the pinning of flake8 disallows running of lint on
Python 3.8 systems.
Update flake8 ignore-list to ignore W504 instead of W503, the PEP
guidance is that either is ok, but there must be local consistency.
There are more occurences of binary operator before line-break
than after in this repository, and we have also chosen to ignore
W504 in most of our other repositories.
Dmitrii Shcherbakov
Frode Nordahl