MB-9058: Consume from fake UPR server

Instead of reading the changes from files, get them
via TCP from the fake UPR server.

Change-Id: If69433c4863de9a7ec2684da1c72d070c5406205
Reviewed-on: http://review.couchbase.org/29403
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Volker Mische <volker.mische@gmail.com>