Update python-ntlm-auth to rev 7 via SR 821007
    
    https://build.opensuse.org/request/show/821007
    by user StevenK + dimstar_suse
    - Update to 1.5.0:
      * Added the `mic_present` property to the `NtlmContext` class to determine
        if a MIC has been added to the authentication message.
      * Added the `sign` and `verify` function to the `NtlmContext` to sign data
        and verify signatures.
      * Added the `reset_rc4_state` function to the `NtlmContext` to allow a
        caller to reset the incoming and outgoing RC4 cipher.
      * Added the `NTLMSSP_NEGOTIATE_UNICODE` flag to the negotiate message to
        ensure the challenge and authentication message's text fields can be
        unicode encoded