ATLAS-2771: Add option to exclude internal types when retrieving typedefs via REST

webapp/src/main/java/org/apache/atlas/web/rest/TypesREST.java

@@ -416,11 +416,18 @@ public class TypesREST {
     private SearchFilter getSearchFilter(HttpServletRequest httpServletRequest) {
         SearchFilter ret    = new SearchFilter();
         Set<String>  keySet = httpServletRequest.getParameterMap().keySet();
-        for (String key : keySet) {
-            ret.setParam(String.valueOf(key), String.valueOf(httpServletRequest.getParameter(key)));
-        }
 
+        for (String k : keySet) {
+            String key   = String.valueOf(k);
+            String value = String.valueOf(httpServletRequest.getParameter(k));
+
+            if (key.equalsIgnoreCase("excludeInternalTypesAndReferences") && value.equalsIgnoreCase("true")) {
                 FilterUtil.addParamsToHideInternalType(ret);
+            } else {
+                ret.setParam(key, value);
+            }
+        }
+
         return ret;
     }
 }