Revert "Remove tests because they depended on mongodb"
    
    This reverts commit 5ea10afd72c0b0de056fd3053063b0477fbfb1b3,
    keeping the release number and changelog.
    
    Because on the commit, there is even not mentioned why the test is not there.
    The test is mandated by packaging guidelines
    https://docs.fedoraproject.org/en-US/packaging-guidelines/Ruby/#_running_test_suites