Update git-review to version 2.3.0 / rev 17 via SR 970662
    
    https://build.opensuse.org/request/show/970662
    by user StevenK + dimstar_suse
    - Update to 2.3.0:
      * Python 3.5 is no longer supported.
      * Git 2.10.0 or later is required as git-review now needs the
        --no-show-signature option for git-log.
      * Git’s log.ShowSignature option is now supported. Previously, setting it
        would confuse git-review into thinking there were twice as many changes
        to push.
      * OpenSSH has deprecated its use of scp/rcp protocol in favor of SFTP,
        which the embedded Apache mina-sshd in widely-deployed Gerrit versions
        does not yet support. Now git-review will attempt to detect whether
        scp’s -O option is available to force use of the legacy scp/rcp protocol,
        and apply it if so. Future git-review versions may change the fallback
        behavior once an SFTP subsystem is implemented and available for a new
        Gerrit release.
    -