ntp_signd: move socket directory to var/lib not var/run for permissions change

ntp_signd: move socket directory to var/lib not var/run for permissions change

With the next patch, this becomes a socket directory on which we must
maintain administrator-specified permissions we will need to move it
away from directories that wipe at boot.

This means the ntp.conf will need to change from (eg)

ntpsigndsocket /usr/local/samba/var/run/ntp_signd/

to

ntpsigndsocket /usr/local/samba/var/lib/ntp_signd/

Andrew Bartlett

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>