update policy and test case

samples/best_practices/disallow_new_capabilities.yaml

@@ -20,12 +20,12 @@ spec:
       message: "Capabilities cannot be added"
       anyPattern:
       - spec:
-          (securityContext):
-            (capabilities):
-              X(add): null    
+        =(securityContext):
+          =(capabilities):
+            X(add): null
       - spec:
           containers:
           - name: "*"
-            (securityContext):
-              (capabilities):
+            =(securityContext):
+              =(capabilities):
                 X(add): null

test/scenarios/samples/best_practices/scenario_validate_disallow_new_capabilities.yaml

@@ -14,5 +14,5 @@ expected:
       rules:
         - name: deny-new-capabilities
           type: Validation
-          message: Validation rule 'deny-new-capabilities' failed at '/spec/containers/securityContext/capabilities/add' for resource Pod//capabilities. Capabilities cannot be added
+          message: Validation rule 'deny-new-capabilities' failed to validate patterns defined in anyPattern. Capabilities cannot be added; anyPattern[0] failed at path /spec/; anyPattern[1] failed at path /spec/containers/0/securityContext/capabilities/add/
           success: false