Set send buffer size in JGroups configuration to avoid warning

Author: acogoluegnes

src/main/resources/jgroups-multicast-stream-perf-test.xml

@@ -6,6 +6,8 @@
     thread_pool.max_threads="10"
     mcast_recv_buf_size="200000"
     ucast_recv_buf_size="200000"
+    mcast_send_buf_size="200000"
+    ucast_send_buf_size="200000"
   />
   <PING />
   <MERGE3 max_interval="30000"
@@ -24,4 +26,4 @@
     min_threshold="0.4"/>
   <FRAG2 frag_size="60K"  />
   <pbcast.STATE_TRANSFER />
-</config>
+</config>