Add Sonar unit test coverage reporting

Add GHA to run unit tests, generate coverage report, and upload the
report to SonarCloud.

Add configuration to ignore code that shouldn't count for coverage.

Relates-to: stolostron/backlog#22706
Signed-off-by: Daniel Farrell <[email protected]>

.github/workflows/report.yml

@@ -10,6 +10,26 @@ on:
 permissions: {}
 
 jobs:
+  unit-coverage:
+    name: Go Unit Test Coverage
+    if: github.repository_owner == 'submariner-io'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repository
+        uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b
+
+      - name: Run Go unit tests
+        run: make unit
+
+      - name: Run SonarScan, upload Go test results and coverage
+        uses: sonarsource/sonarcloud-github-action@de2e56b42aa84d0b1c5b622644ac17e505c9a049
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        with:
+          args: >
+            --debug
+
   variant-analysis:
     name: Variant Analysis
     runs-on: ubuntu-latest

sonar-project.properties

@@ -0,0 +1,10 @@
+sonar.projectKey=submariner-io_submariner-operator
+sonar.projectName=submariner-operator
+sonar.organization=submariner-io
+sonar.sources=.
+sonar.exclusions=**/vendor/**,**/*_test.go,test/e2e/**
+sonar.tests=.
+sonar.test.inclusions=**/*_test.go,test/e2e/**
+sonar.test.exclusions=**/vendor/**
+sonar.go.tests.reportPaths=**/junit.xml
+sonar.go.coverage.reportPaths=**/unit.coverprofile