s3:loadparm: reinit_globals in lp_load_with_registry_shares()

s3:loadparm: reinit_globals in lp_load_with_registry_shares()

This was set to false in 0e0d77519c27038b30fec92d542198e97be767d9 based
on the assumption that callers would have no need to call
lp_load_initial_only() with a later call to lp_load_something().

This is not quite correct, since for accessing registry config on a
cluster with include=registry, we need messaging up and running which
*itself* requires loadparm to be initialized to get the statedir,
lockdir asf. directories.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13465

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Christof Schmitt <cs@samba.org>