[Samba] Failures after update Samba 4.6.2

[Ricardo Pardim Claus]

Dear Rowland

When I execute the command, I get the following error:

# samba-tool domain tombstones expunge
ERROR(<type 'exceptions.AttributeError'>): uncaught exception - 'module' object has no attribute 'time'
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/__init__.py", line 176, in _run
    return self.run(*args, **kwargs)
  File "/usr/local/samba/lib64/python2.7/site-packages/samba/netcmd/domain.py", line 3790, in run
    current_time = long(time.time())