Update plumbing tests to match new tcp testing app.
Update plumbing tests to match new tcp testing app.

BUG=None
TEST=local
TBR=channing@chromium.org

Review URL: https://codereview.chromium.org/497573003

git-svn-id: 84b3587ce119b778414dcb50e18b7479aacf4f1d@1563 7dad1e8b-422e-d2af-fbf5-8013b78bd812

kuscsik/naclports,yeyus/naclports,Schibum/naclports,Schibum/naclports,yeyus/naclports,kuscsik/naclports,yeyus/naclports,dtkav/naclports,kuscsik/naclports,dtkav/naclports,yeyus/naclports,Schibum/naclports,yeyus/naclports,kuscsik/naclports,dtkav/naclports,yeyus/naclports,dtkav/naclports,kuscsik/naclports,dtkav/naclports,Schibum/naclports,Schibum/naclports,Schibum/naclports