Update Code Coverage Report and Fix webapp instructions (#36822)

* Fix webapp config for code coverage tool

This PR fixes the cloud deployment config so we can upload code coverage
again.

* Update readme with extra instructions

* Restyled by prettier-markdown

* Attempt to fix misspell CI error

* Another attempt. Pyspelling CI checker doesn't like Yufeng's name.

* Update title to "Matter SDK Coverage Report" and add SHA

* Restyled by shfmt

---------

Co-authored-by: Restyled.io <[email protected]>

Author: soares-sergio

integrations/appengine/README.md

@@ -1,4 +1,4 @@
-## Deploy Static Website on App Engine
+## Deploy Static Website on App Engine for The Matter SDK Coverage Report
 
 ### Setup google cloud integration
 
@@ -30,7 +30,43 @@ settings of your App Engine application.
 Directory `out/coverage/coverage` contains the coverage report files, such as
 HTML, CSS, images, and JavaScript.
 
+Deploying your generated report:
+
 ```
 cd out/coverage/coverage
-gcloud app deploy ../../../integrations/appengine/webapp_config.yaml
+gcloud app deploy webapp_config.yaml --project matter-build-automation
+```
+
+The output should look like:
+
+```
+Services to deploy:
+
+descriptor:                  [/usr/local/google/home/<user>/connectedhomeip/out/coverage/coverage/webapp_config.yaml]
+source:                      [/usr/local/google/home/<user>/connectedhomeip/out/coverage/coverage]
+target project:              [matter-build-automation]
+target service:              [default]
+target version:              [20241212t175429]
+target url:                  [https://matter-build-automation.ue.r.appspot.com]
+target service account:      [[email protected]]
+
+
+Do you want to continue (Y/n)?  Y
+
+Beginning deployment of service [default]...
+╔════════════════════════════════════════════════════════════╗
+╠═ Uploading 0 files to Google Cloud Storage                ═╣
+╚════════════════════════════════════════════════════════════╝
+File upload done.
+Updating service [default]...done.
+Setting traffic split for service [default]...done.
+Deployed service [default] to [https://matter-build-automation.ue.r.appspot.com]
+
+You can stream logs from the command line by running:
+  $ gcloud app logs tail -s default
+
+To view your application in the web browser run:
+  $ gcloud app browse --project=matter-build-automation
 ```
+
+If you run into permission issues, reach out to a team member from Google.

integrations/appengine/webapp_config.yaml

@@ -1,6 +1,4 @@
-runtime: python27
-api_version: 1
-threadsafe: true
+runtime: python39
 handlers:
     - url: /
       static_files: html/index.html

scripts/build_coverage.sh

@@ -179,7 +179,7 @@ mkdir -p "$COVERAGE_ROOT"
 lcov --initial --capture --directory "$OUTPUT_ROOT/obj/src" --exclude="$PWD"/zzz_generated/* --exclude="$PWD"/third_party/* --exclude=/usr/include/* --output-file "$COVERAGE_ROOT/lcov_base.info"
 lcov --capture --directory "$OUTPUT_ROOT/obj/src" --exclude="$PWD"/zzz_generated/* --exclude="$PWD"/third_party/* --exclude=/usr/include/* --output-file "$COVERAGE_ROOT/lcov_test.info"
 lcov --add-tracefile "$COVERAGE_ROOT/lcov_base.info" --add-tracefile "$COVERAGE_ROOT/lcov_test.info" --output-file "$COVERAGE_ROOT/lcov_final.info"
-genhtml "$COVERAGE_ROOT/lcov_final.info" --output-directory "$COVERAGE_ROOT/html"
+genhtml "$COVERAGE_ROOT/lcov_final.info" --output-directory "$COVERAGE_ROOT/html" --title "SHA:$(git rev-parse HEAD)" --header-title "Matter SDK Coverage Report"
 
 # Copy webapp's YAML file to the coverage output directory
 cp "$CHIP_ROOT/integrations/appengine/webapp_config.yaml" "$COVERAGE_ROOT/webapp_config.yaml"