Increase buffer size

In large environments doing massive requests, give
a better chance for the receive socket to retain data on
our behalf.

Change-Id: I54ef64f7dba19c167f2377164465ece2bc0210de

pyghmi/ipmi/private/session.py

@@ -375,6 +375,10 @@ class Session(object):
                 tmpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         else:
             tmpsocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        try:
+            tmpsocket.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 16777216)
+        except Exception:
+            pass
         if server is None:
             # Rather than wait until send() to bind, bind now so that we have
             # a port number allocated no matter what