Docker creates a UTS namespace by default, even with --net=host, so it
is reasonable to let the user set the hostname. Note that --hostname is
forbidden if the user specifies --uts=host.
Closes#12076
Signed-off-by: Jason Heiss <jheiss@aput.net>
Upstream-commit: 3f445e63b4568845f439c5d30a99ba10603b1938
Component: engine