Avoid extra XML elements in views

Non-view modules get called and add empty "actions", "builders" and
other XML elements to view XML tags where they are not supposed to be,
this causes Jenkins "Old data" warnings

Change-Id: Ie031192dca7ac0920e0953d533ed15c22db91022
Story: 2002159
Task: 20008

jenkins_jobs/xml_config.py

@@ -90,6 +90,7 @@ class XmlGenerator(object):
             Mod = ep.load()
             mod = Mod(self.registry)
             xml = mod.root_xml(data)
+            if "view-type" not in data:
                 self._gen_xml(xml, data)
             obj = XmlJob(xml, data['name'])
             return obj