Update set_conversion_host_api() to use CA certs

Author: nachandr

cfme/infrastructure/virtual_machines.py

@@ -1523,10 +1523,10 @@ def step(self, *args, **kwargs):
     def resetter(self, *args, **kwargs):
         # https://bugzilla.redhat.com/show_bug.cgi?id=1821974#c5
         # History & Refresh buttons have been removed from explorer screens on upstream only.
-        if not self.context["object"].appliance.is_downstream:
-            pass
-        else:
+        if self.obj.appliance.is_downstream:
             self.view.toolbar.reload.click()
+        else:
+            pass
 
 
 @navigator.register(InfraTemplate, 'ArchiveDetails')