IS0501Test.py: remove trailing slash from /staged endpoint for PATCH (#856)

Author: matthewdicken

nmostesting/suites/IS0501Test.py

@@ -1210,7 +1210,7 @@ def patch_auto_params(self, test, resources, resourceType, autoParams):
         """
         if len(resources) > 0:
             for resource in resources:
-                dest_staged = "single/" + resourceType + "/" + resource + "/staged/"
+                dest_staged = "single/" + resourceType + "/" + resource + "/staged"
                 dest_active = "single/" + resourceType + "/" + resource + "/active/"
 
                 valid, response = self.is05_utils.checkCleanRequestJSON("GET", dest_staged)