Add codecov.yml path

.circleci/config.yml

@@ -57,6 +57,7 @@ jobs:
       - run: TESTARGS="-coverprofile=coverage.txt  -covermode=atomic" make ci
       - codecov/upload:
           file: coverage.txt
+          conf: /go/src/github.com/hashicorp/packer/.codecov.yml
   test-darwin:
     executor: darwin
     working_directory: ~/go/src/github.com/hashicorp/packer
@@ -68,6 +69,7 @@ jobs:
           GOVERSION: "1.13"
       - codecov/upload:
           file: coverage.txt
+          conf: ~/go/src/github.com/hashicorp/packer/.codecov.yml
   test-windows:
     executor:
       name: win/vs2019
@@ -77,6 +79,7 @@ jobs:
           GOVERSION: "1.13"
       - codecov/upload:
           file: coverage.txt
+          conf: ~/go/src/github.com/hashicorp/packer/.codecov.yml
   check-lint:
     executor: golang
     resource_class: large