[Pkg-salt-team] salt is marked for autoremoval from testing

[Debian testing autoremoval watch]

salt 2018.3.4+dfsg1-7 is marked for autoremoval from testing on 2019-09-06

It (build-)depends on packages with these RC bugs:
932882: python-pyroute2,python3-pyroute2: python{,3}-pyroute2: /usr/bin/ss2 shipped in both packages
934960: python-mock, src:pytest-mock: python-mock breaks pytest-mock autopkgtest