[JENKINS-18381] Provide a mechanism to differentiate between node

properties that are applicable to the master node only and node properties
that can be applied to all nodes

core/src/main/java/hudson/Functions.java

@@ -796,6 +796,22 @@ public class Functions {
         return result;
     }
 
+    /**
+     * Returns those node properties which can be configured as global node properties.
+     *
+     * @since 1.520
+     */
+    public static List<NodePropertyDescriptor> getGlobalNodePropertyDescriptors() {
+        List<NodePropertyDescriptor> result = new ArrayList<NodePropertyDescriptor>();
+        Collection<NodePropertyDescriptor> list = (Collection) Jenkins.getInstance().getDescriptorList(NodeProperty.class);
+        for (NodePropertyDescriptor npd : list) {
+            if (npd.isApplicableAsGlobal()) {
+                result.add(npd);
+            }
+        }
+        return result;
+    }
+
     /**
      * Gets all the descriptors sorted by their inheritance tree of {@link Describable}
      * so that descriptors of similar types come nearby.