Require idstart to be larger than UID_MAX
ipa-server-install fails if idstart is set to 0. There might be
additional issues when idstart overlaps with local users. Ensure that
idstart is larger than UID_MAX or GID_MAX from /etc/login.defs.
Signed-off-by: Christian Heimes <firstname.lastname@example.org>
Reviewed-By: Alexander Bokovoy <email@example.com>