Add WSDL URLs to `SoapItemCompareService`

composer.json

 {
   "name": "adi-ia/cbs-techstore-client-php",
   "description": "A PHP client used to connect with the CBS API and perform requests",
-  "version": "7.7.0",
+  "version": "7.7.1",
   "license": "Apache-2.0",
   "homepage": "https://wiki.doit.wisc.edu/confluence/display/ADIIA/CBS",
   "authors": [

src/main/edu/wisc/services/cbs/item_comp/SoapItemCompareService.php

@@ -14,6 +14,15 @@ use edu\wisc\services\cbs\item_comp\generated\OutputParameters;
 class SoapItemCompareService implements ItemCompareService, SoapService
 {
 
+    /** URL for QA WSLD */
+    const CBQA12 = 'http://pegasus.doit.wisc.edu:8018/webservices/SOAProvider/plsql/doit_soa_item_comp_v1/?wsdl';
+    /** URL for DV WSDL */
+    const CBDV12 = 'http://pegasus.doit.wisc.edu:8016/webservices/SOAProvider/plsql/doit_soa_item_comp_v1/?wsdl';
+    /** URL for CP WSDL */
+    const CBCP12 = 'http://pegasus.doit.wisc.edu:8015/webservices/SOAProvider/plsql/doit_soa_item_comp_v1/?wsdl';
+    /** URL for PROD WSDL */
+    const CBSP = 'http://galactica.doit.wisc.edu:8001/webservices/SOAProvider/plsql/doit_soa_item_comp_v1/?wsdl';
+
     /** @var DOIT_SOA_ITEM_COMP_V1_Service */
     private $soapClient;