salt: Update to 3001

[ryandesign (Ryan Carsten Schmidt)]

salt could be updated to 3001:

$ port liv salt
salt seems to have been updated (port version: 3000.3, new version: 3001rc1)

The livecheck should be fixed to avoid non-stable versions.

When you update you should stop getting the download file from github and start getting it from pypi as explained here: ​https://github.com/saltstack/salt/issues/41847

The patchfile will need to be adjusted. The patch creates the setup.cfg file, but 3001 already comes with one.

The post-patch reinplaces will need to be adjusted. One of them no longer applies, another targets a file that no longer exists. It is difficult for anyone looking at the reinplaces to understand exactly what was being replaced. It would help future developers understand your purpose and intent if you used patchfiles instead of reinplaces.