add flexran sample config

targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.50PRB.usrpb210.conf

@@ -189,6 +189,15 @@ RUs = (
     }
 );  
 
+NETWORK_CONTROLLER :
+{
+    FLEXRAN_INTERFACE_NAME = "lo";
+    FLEXRAN_IPV4_ADDRESS   = "127.0.0.1";
+    FLEXRAN_PORT           = 2210;
+    FLEXRAN_CACHE          = "/mnt/oai_agent_cache";
+    FLEXRAN_AWAIT_RECONF   = "no";
+};
+
      log_config :
      {
        global_log_level                      ="info";