Try moving codecov integration to github action (#275)

* Try moving codecov integration into github action

* Update tests.yml

try using the github action instead

Author: bmoffatt

.github/workflows/tests.yml

@@ -31,4 +31,8 @@ jobs:
 
       - name: go test
         run: go test -race -coverprofile=coverage.txt -covermode=atomic ./...
-
+      
+      - name: Upload coverage to Codecov  
+        uses: codecov/codecov-action@v1
+        with:
+         file: ./coverage.txt