metrics: add telemetry update

.travis.yml

@@ -26,7 +26,8 @@ install:
 
 script:
   - touch ./coverage.tmp
-  - echo 'mode: atomic' > coverage.txt
+  - |
+    echo 'mode: atomic' > coverage.txt
   - |
     go list ./... | grep -v /cmd | grep -v /vendor | xargs -n1 -I{} sh -c 'go test -race -covermode=atomic -coverprofile=coverage.tmp -coverpkg $(go list ./... | grep -v /vendor | tr "\n" ",") {} && tail -n +2 coverage.tmp >> coverage.txt' && rm coverage.tmp
   - touch ./coverage.tmp