ci: send test results to Codecov Test Analytics

The Codecov Test Analytics page for this repo has no data: go-check
uploads coverage.out and nothing else, so there is no flaky-test
detection, no per-test durations and no failure history.

netresearch/.github#333 added enable-test-results to the shared
workflow, which runs the unit tests through gotestsum and uploads the
JUnit report. Turning it on here is the whole change.

The template.yaml drift reason is updated to name the new input, and
corrects the e2e count it records: 11 tests now, one of them
browser-driven.

Signed-off-by: Sebastian Mendel <github@sebastianmendel.de>

Author: CybotTM

.github/template.yaml

@@ -5,7 +5,9 @@ template: go-app
 intentional-drift:
 - path: .github/workflows/ci.yml
   reason: "enable-integration-tests: true and enable-e2e-tests: true \u2014 repo has\
-    \ integration tests (12 files, -tags=integration) and e2e tests (10 tests under\
-    \ ./e2e/..., -tags=e2e) that run in CI."
+    \ integration tests (12 files, -tags=integration) and e2e tests (11 tests under\
+    \ ./e2e/..., -tags=e2e, one of them browser-driven) that run in CI. Plus\
+    \ enable-test-results: true, which routes the unit tests through gotestsum so\
+    \ Codecov Test Analytics has data (netresearch/.github#333)."
 - path: .github/dependabot.yml
   reason: "Opt-in devcontainers ecosystem. The trimmed go-app template (netresearch/.github#166) declares only gomod/github-actions/docker; this repo has a .devcontainer so it self-manages dependabot.yml to keep devcontainers updates. Core blocks are kept in step with the template manually."

.github/workflows/ci.yml

@@ -22,6 +22,7 @@ jobs:
       enable-fuzz: true
       enable-license-check: true
       enable-codecov: true
+      enable-test-results: true
       enable-integration-tests: true
       enable-e2e-tests: true
       e2e-test-packages: ./e2e/...