jenkins: move network-test script to repo

jenkins/network-test.sh

+#!/bin/sh
+
+export GOPATH=$WORKSPACE
+
+PWD=`pwd`
+cd ../3nodetest
+make clean
+make test
+make save_logs
+
+docker cp dockertest_server_1:/root/.go-ipfs/logs/events.log    $(PWD)/build/server-events.log
+docker cp dockertest_bootstrap_1:/root/.go-ipfs/logs/events.log $(PWD)/build/bootstrap-events.log
+docker cp dockertest_client_1:/root/.go-ipfs/logs/events.log    $(PWD)/build/client-events.log