[Samba] 4.7.x -> 4.9.x upgrade

[Reindl Harald]

Am 14.02.19 um 20:56 schrieb Gregory Sloop via samba:
> And yes, I get that doesn't really solve the distro upgrade problem, but if it was a given that you could spin up a new DC and sync, then transfer FSMO roles - well that would go a long way to assuring a reasonable way around the problem. (At least until a good understanding of the problem was wide-spread and a solution found.)

if you can't do a dist-upgrade and just reboot it's a bug

all of my mysql instances dating back to 2002 originally on windows,
where running for years on MacOS and are running on Linux with MariaDB
10.2.22 and frankly i excpect the same from soemthing trivial like a
fileserver / domain controller