MFH: r463791
sysutils/py-salt: Update to 2017.7.4
This is a bugfix release for the 2017.7.x branch.
Changes this release:
https://docs.saltstack.com/en/latest/topics/releases/2017.7.4.html
PR: 226319
Approved by: Christer Edwards (maintainer)
Approved by: ports-secteam (riggs)