rpcsvc: calculate dump response length instead of hard coding it.
rpcsvc: calculate dump response length instead of hard coding it.

Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster