slapos_cloud: Run tests by default on View Skins

   It allow us to use renderjs_runner UI for develop and run tests.

master/bt5/slapos_cloud/TestTemplateItem/portal_components/test.erp5.SlapOSTestCaseMixin.py

@@ -82,6 +82,7 @@ class SlapOSTestCaseMixin(testSlapOSMixin):
 
   def afterSetUp(self):
     testSlapOSMixin.afterSetUp(self)
+    self.changeSkin('View')
     self.portal.portal_activities.unsubscribe()
     self.new_id = self.generateNewId()