add support for maniupulating recording via REST API

lib/session/call-session.js

@@ -868,6 +868,9 @@ class CallSession extends Emitter {
       const res = await this._lccSipRequest(opts, callSid);
       return {status: res.status, reason: res.reason};
     }
+    else if (opts.record) {
+      await this.notifyRecordOptions(opts.record);
+    }
 
     // whisper may be the only thing we are asked to do, or it may that
     // we are doing a whisper after having muted, paused reccording etc..