Suppress console debug and info logs in tests

Plugins and reporting infrastructure generate a significant amount of
noise by logging to console.debug and console.info.

This change stubs these console methods in the common test setup to
keep the test output clean and readable.

Release-Notes: skip
Change-Id: If4dc07da4bf0c180986b7211675324a8b17ec1c9
diff --git a/polygerrit-ui/app/test/common-test-setup.ts b/polygerrit-ui/app/test/common-test-setup.ts
index ace488c..feb5ab4 100644
--- a/polygerrit-ui/app/test/common-test-setup.ts
+++ b/polygerrit-ui/app/test/common-test-setup.ts
@@ -104,6 +104,11 @@
 }
 
 setup(function () {
+  // Very noisy. There are a lot of plugins / reportings that are logging to
+  // console.debug and console.info. We don't want to see them in the test output.
+  sinon.stub(console, 'debug');
+  sinon.stub(console, 'info');
+
   testSetupTimestampMs = new Date().getTime();
   currentTestName = this.currentTest?.title || 'unknown test';