CI: Cleanup linux integration tests

This fixes a regression introduced in
573cdb5 /
#28. We run bolt on a
couple of containers and valid the resultset. A Puppet 6 container was
removed, but the test still expected the result from that. This wasn't
noticed in CI, because the tests were only executed when specific files
changed, and that wasn't triggered in this specific case. We cleaned up
CI and all jobs now run always.

Author: bastelfreak

spec/integration/container_spec.rb

@@ -38,7 +38,7 @@
       users = result.map do |hash|
         hash.dig('value', 'report', 'resource_statuses').keys
       end.flatten
-      expect(users).to eq(["Notify[root\n]", "Notify[root\n]"])
+      expect(users).to eq(["Notify[root\n]"])
     end
   end
 end