message: sonar-scan.sh: correct SonarCloud URL
  According to SonarCloud's email notification,
  they're dropping sonarqube.com in favor of sonarcloud.io.
diff: @@ -54,7 +54,7 @@ sonar_cmd_base="build-wrapper-linux-x86-64 --out-dir ${bw_output_path} make -j8
  -Dsonar.java.binaries='src' \
  -Dsonar.coverage.exclusions='**/*' \
  -Dsonar.cfamily.build-wrapper-output=${bw_output_path} \
  - -Dsonar.host.url=https://sonarqube.com \
  + -Dsonar.host.url=https://sonarcloud.io \
  -Dsonar.organization=${SONAR_ORG} \
  -Dsonar.login=${SONAR_TOKEN} \
  "
  