ci: tweak code coverage settings (#6920)

.github/codecov.yml

@@ -0,0 +1,25 @@
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+  status:
+    project:
+      default:
+        threshold: 20%
+    patch: on
+    changes: off
+
+github_checks:
+  annotations: false
+
+comment: false
+
+ignore:
+  - "docs"
+  - "DOCKER"
+  - "scripts"
+  - "**/*.pb.go"
+  - "libs/pubsub/query/query.peg.go"
+  - "*.md"
+  - "*.rst"
+  - "*.yml"

.github/workflows/coverage.yml

@@ -121,3 +121,7 @@ jobs:
       - run: |
           cat ./*profile.out | grep -v "mode: atomic" >> coverage.txt
         if: env.GIT_DIFF
+      - uses: codecov/codecov-action@v2.0.3
+        with:
+          file: ./coverage.txt
+        if: env.GIT_DIFF