Log Message:
salt: don't crash if no swap is configured, apply pkgin module fixes

patches/patch-salt_grains_core.py:
- Reapply patch in a NetBSD/OpenBSD specific code block after package update
  to 2018.3.1, from PR pkg/53278
- upstream pull #47600

patches/patch-salt_modules_pkgin.py:
- Apply patch in pkgin specific code block from PR pkg/53344
- upstream pull #47814

bump PKGREVISION
ok <leot>