ci: publish coverage before sonar gate

Jenkinsfile

@@ -101,6 +101,10 @@ spec:
           sh '''#!/usr/bin/env bash
             set -euo pipefail
             mkdir -p build
+            export GOFLAGS='-buildvcs=false'
+            if [ ! -s build/coverage.out ]; then
+              go test ./... -coverprofile=build/coverage.out
+            fi
             args=(
               "-Dsonar.host.url=${SONARQUBE_HOST_URL}"
               "-Dsonar.login=${SONARQUBE_TOKEN}"