Latest System Diagram svg files

The svg files in last commit were not latest

Change-Id: I7afb0c0bbe6fa71b401b19694b2acad4dcb10636
Reviewed-on: http://review.couchbase.org/34342
Tested-by: Sriram Melkote <siri@couchbase.com>
Reviewed-by: Sriram Melkote <siri@couchbase.com>