test: update for new pre-salted images [skip ci]

test/integration/default/files/_mapdata/opensuse-15.yaml

     pyinotify: python-pyinotify
     python_dulwich: python-dulwich
     python_git: python-git
-    release: '3003'
+    release: '3004'
     restart_via_at: false
     retry_options:
       attempts: 5

test/integration/default/files/_mapdata/opensuse-tumbleweed.yaml

     pyinotify: python-pyinotify
     python_dulwich: python-dulwich
     python_git: python-git
-    release: '3003'
+    release: '3004'
     restart_via_at: false
     retry_options:
       attempts: 5

test/salt/pillar/v3001-py3.sls

-# -*- coding: utf-8 -*-
-# vim: ft=yaml
----
-salt:
-  release: '3001'