Bug#890267: URL check by cme reports that salsa.debian.org is not canonical

[Gabriel F. T. Gomes]

Package: cme
Version: 1.026-1

Running 'cme check dpkg' on a package maintained with git and that has
already moved the repository to salsa.debian.org produces warnings for
the fields 'Vcs-Browser' and 'Vcs-Git'.  The warning states that the
"URL is not the canonical one for repositories hosted on Alioth".

This is the output of 'cme check dpkg' for bash-completion ITA:

  $ cme check dpkg
  cme: using Dpkg model
  loading data
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  Warning in 'control source Vcs-Browser' value 'https://salsa.debian.org/debian/bash-completion': URL is not the canonical one for repositories hosted on Alioth.
  Warning in 'control source Vcs-Git' value 'https://salsa.debian.org/debian/bash-completion.git': URL is not the canonical one for repositories hosted on Alioth.
  checking data
  check done

Should salsa.debian.org also be considered a canonical URL now that it
is out of beta [1]?

[1] https://lists.debian.org/debian-devel-announce/2018/01/msg00004.html