build: increase timeout in run.rc

Increasing the timeout prevents the runtime test
to time out on the Plan 9 instances running on GCE.

Update golang/go#9491

Change-Id: Id9c2b0c4e59b103608565168655799b353afcd77
Reviewed-on: https://go-review.googlesource.com/2462Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

src/run.rc

@@ -29,13 +29,13 @@ if not {
 GOROOT_FINAL = ()
 
 echo '# Testing packages.'
-time go test std -short -timeout 120s
+time go test std -short -timeout 240s
 echo
 
 # We set GOMAXPROCS=2 in addition to -cpu=1,2,4 in order to test runtime bootstrap code,
 # creation of first goroutines and first garbage collections in the parallel setting.
 echo '# GOMAXPROCS=2 runtime -cpu=1,2,4'
-GOMAXPROCS=2 go test runtime -short -timeout 240s -cpu 1,2,4
+GOMAXPROCS=2 go test runtime -short -timeout 480s -cpu 1,2,4
 echo
 
 echo '# sync -cpu=10'