build(ci): Use codecov GH action instead of bash script (#32959)

This uses a GH Action instead of bash script. The bash script has been deprecated. See https://github.com/codecov/codecov-action

* Change our uploads by adding a flag for frontend or backend. 
* Only upload coverage of acceptance tests on backend changes (unsure how this will affect codecov for frontend only changes)


This does *NOT* fix the spiky reporting of coverage (which I believe is due to flakey tests, eg, 3 of 4 test instances fail, but we still report 3 of them to codecov.

Note, due to a [bug in codecov](codecov/uploader#475), we have to unset `NODE_OPTIONS`

.github/actions/artifacts/action.yml

@@ -1,13 +1,26 @@
 name: 'Sentry Artifacts'
 description: 'Handles uploading coverage/test artifacts to codecov'
 
+inputs:
+  files:
+    description: "Path to coverage file(s) - comma separated for multiple files"
+    default: ".artifacts/*.coverage.xml"
+    required: true
+  type:
+    description: "The type of change (frontend, backend)"
+    default: "backend"
+    required: false
+
 runs:
   using: "composite"
   steps:
     - name: Upload to codecov
-      shell: bash
-      run: |
-        coverage_files=$(ls .artifacts/*coverage.xml || true)
-        if [[ -n "$coverage_files" || -f .artifacts/coverage/cobertura-coverage.xml ]]; then
-          bash <(curl -s https://codecov.io/bash) -v
-        fi
+      uses: codecov/codecov-action@v2
+      env:
+        # This is because of a bug in codecov's uploader
+        # See: https://github.com/codecov/uploader/issues/475
+        NODE_OPTIONS: ""
+      with:
+        flags: ${{ inputs.type }}
+        files: ${{ inputs.files }}
+        verbose: true

.github/workflows/acceptance.yml

@@ -88,6 +88,9 @@ jobs:
 
       - name: Handle artifacts
         uses: ./.github/actions/artifacts
+        with:
+          files: .artifacts/coverage/*
+          type: frontend
 
   webpack:
     name: create frontend bundle
@@ -209,8 +212,17 @@ jobs:
           save-only: true
           snapshot-path: .artifacts/visual-snapshots
 
+      # We use the below to determine the flag to use in codecov
+      - name: Check for python file changes
+        uses: getsentry/paths-filter@v2
+        id: changes
+        with:
+          token: ${{ github.token }}
+          filters: .github/file-filters.yml
+
       - name: Handle artifacts
         uses: ./.github/actions/artifacts
+        if: ${{ steps.changes.outputs.backend == 'true' }}
 
   chartcuterie:
     name: chartcuterie integration

Makefile

@@ -161,7 +161,7 @@ test-plugins:
 
 test-relay-integration:
 	@echo "--> Running Relay integration tests"
-	pytest tests/relay_integration -vv
+	pytest tests/relay_integration -vv --cov . --cov-report="xml:.artifacts/relay.coverage.xml" --junit-xml=".artifacts/relay.junit.xml"
 	@echo ""
 
 test-api-docs: build-api-docs