Merge pull request #672 from iamqizhao/master

skip more go runtime goroutines in leak check.

test/end2end_test.go

@@ -1946,6 +1946,7 @@ func interestingGoroutines() (gs []string) {
 			strings.Contains(stack, "testing.Main(") ||
 			strings.Contains(stack, "runtime.goexit") ||
 			strings.Contains(stack, "created by runtime.gc") ||
+			strings.Contains(stack, "created by google3/base/go/log.init") ||
 			strings.Contains(stack, "interestingGoroutines") ||
 			strings.Contains(stack, "runtime.MHeap_Scavenger") ||
 			strings.Contains(stack, "signal.signal_recv") ||