Integrate with Codecov (#1308)

hack/runtests.sh

@@ -20,8 +20,17 @@ else
     fi
 fi
 
-go test -v -i $(go list ./... | grep -v '/vendor/' | grep -v 'examples/go' | grep -v 'benchmark')
+set +x
+
+# for codecov
+echo "" > coverage.txt
 
 # The executor unit test only works with NodePort-type services for
 # now. So disable it for our travis ci tests.
-go test -v $(go list ./... | grep -v '/vendor/' | grep -v 'examples/go' | grep -v executor | grep -v 'benchmark')
+for d in $(go list ./... | grep -v '/vendor/' | grep -v 'examples/go' | grep -v executor | grep -v 'benchmark'); do
+    go test -v -coverprofile=profile.out -covermode=atomic $d
+    if [ -f profile.out ]; then
+        cat profile.out >> coverage.txt
+        rm profile.out
+    fi
+done