Adds getBucketingId call in getVariationForRollout method.

Author: mfahadahmed

packages/optimizely-sdk/lib/core/decision_service/index.js

@@ -384,6 +384,8 @@ DecisionService.prototype._getVariationForRollout = function(feature, userId, at
     };
   }
 
+  var bucketingId = this._getBucketingId(userId, attributes);
+
   // The end index is length - 1 because the last experiment is assumed to be
   // "everyone else", which will be evaluated separately outside this loop
   var endIndex = rollout.experiments.length - 1;
@@ -401,7 +403,7 @@ DecisionService.prototype._getVariationForRollout = function(feature, userId, at
     }
 
     this.logger.log(LOG_LEVEL.DEBUG, sprintf(LOG_MESSAGES.USER_MEETS_CONDITIONS_FOR_TARGETING_RULE, MODULE_NAME, userId, index + 1));
-    bucketerParams = this.__buildBucketerParams(experiment.key, userId, userId);
+    bucketerParams = this.__buildBucketerParams(experiment.key, bucketingId, userId);
     variationId = bucketer.bucket(bucketerParams);
     variation = this.configObj.variationIdMap[variationId];
     if (variation) {