fix(ng-lint): add `--silent` for sonar lint report, issue #30

      mkdir -p -m 777 reports

      # generate ts lint report in json for SONARqube

      # shellcheck disable=SC2086

      ng $NG_LINT_ARGS --format=json --force > reports/ng-lint.tslint.json

      ng $NG_LINT_ARGS --format=json --force --silent > reports/ng-lint.tslint.json

    fi

  }