add ancestry path support

Author: Abhishek Bindra

lib/core/utils/dq-element.js

@@ -246,6 +246,9 @@ DqElement.prototype = {
    * @return {String}
    */
   get selector() {
+    if (axe._cache.get('targetFormat') === 'ancestry') {
+      return this.spec.selector || [getAncestry(this.element)];
+    }
     if (axe._cache.get('runTypeAOpt')) {
       return this.spec.selector || [generateSelectorWithShadow(this.element)];
     }