IntentIq ID Module: add new query parameter (prebid#14273)

* add new param to VR request

* use new param in unit test

Author: DimaIntentIQ

modules/intentIqIdSystem.js

@@ -514,6 +514,7 @@ export const intentIqIdSubmodule = {
     url = appendSPData(url, firstPartyData)
     url += '&source=' + PREBID;
     url += '&ABTestingConfigurationSource=' + configParams.ABTestingConfigurationSource
+    url += '&abtg=' + encodeURIComponent(actualABGroup)
 
     // Add vrref and fui to the URL
     url = appendVrrefAndFui(url, configParams.domainName);

test/spec/modules/intentIqIdSystem_spec.js

@@ -1617,6 +1617,7 @@ describe('IntentIQ tests', function () {
       JSON.stringify({ pid: 'test_pid', data: 'test_personid', ls: true })
     );
 
+    expect(request.url).to.contain(`abtg=${usedGroup}`);
     expect(request.url).to.contain(`ABTestingConfigurationSource=${ABTestingConfigurationSource}`);
     expect(request.url).to.contain(`testGroup=${usedGroup}`);
     expect(callBackSpy.calledOnce).to.be.true;