adding codecov coverage support.

.github/workflows/build.yaml

@@ -40,6 +40,12 @@ jobs:
 
           go mod vendor
           go test -race -coverprofile=coverage.txt -covermode=atomic -v -tags "static" $(go list ./... | grep -v /vendor/)
+      - uses: codecov/codecov-action@v2
+        with:
+          files: ./coverage.txt
+          flags: unittests
+          fail_ci_if_error: true
+          verbose: true
       - name: Build Binaries
         run: |