when running on kubernetes, use sbc-sip service rather than pinging sbcs

lib/utils/sbc-pinger.js

@@ -17,6 +17,10 @@ module.exports = (logger) => {
     assert.ok(sbcs.length, 'JAMBONES_SBCS env var is empty or misconfigured');
     logger.info({sbcs}, 'SBC inventory');
   }
+  else if (process.env.K8S && process.env.K8S_SBC_SIP_SERVICE_NAME) {
+    sbcs = [`${process.env.K8S_SBC_SIP_SERVICE_NAME}:5060`];
+    logger.info({sbcs}, 'SBC inventory');
+  }
 
   // listen for SNS lifecycle changes
   let lifecycleEmitter = new Emitter();