adding alias rxnetwork to adkernel (#3656)

Author: katherynhrabik

src/main/resources/bidder-config/adkernel.yaml

@@ -2,6 +2,8 @@ adapters:
   adkernel:
     endpoint: http://pbs.adksrv.com/hb?zone=%s
     endpoint-compression: gzip
+    aliases:
+      rxnetwork: ~
     meta-info:
       maintainer-email: [email protected]
       app-media-types: