Description of problem:
Upgrading openldap-servers stops slapd


Version-Release number of selected component (if applicable):
openldap-servers-2.4.44-5.el7


How reproducible:
Always


Steps to Reproduce:
1. Install older openldap-servers.

2. Start slapd as follows:
~~~
# cp /usr/share/openldap-servers/DB_CONFIG.example /var/lib/ldap/DB_CONFIG
# chown ldap. /var/lib/ldap/DB_CONFIG
# systemctl enable slapd
# systemctl start slapd
# systemctl is-active slapd
active
~~~

3. Upgrade openldap-servers to the latest and find slapd will become inactive.
~~~
# rpm -Uvh openldap-2.4.44-5.el7.x86_64.rpm openldap-clients-2.4.44-5.el7.x86_64.rpm openldap-servers-2.4.44-5.el7.x86_64.rpm
# systemctl is-active slapd
inactive
~~~

Actual results:
Upgrading openldap-servers stops slapd

Expected results:
Upgrading openldap-servers restarts slapd


Additional info:

If there is not /etc/sysconfig/ldap, line #82 is sikipped.
~~~
# rpm -qp openldap-servers-2.4.44-5.el7.x86_64.rpm --scripts | cat -n
...skip

    57	# conversion from /etc/sysconfig/ldap to /etc/sysconfig/slapd
    58	if [ $1 -eq 2 ]; then
    59		# we expect that 'ldap' will be renamed to 'ldap.rpmsave' after removing the old package
    60		[ -r /etc/sysconfig/ldap ] || exit 0
...skip


    82	# restart after upgrade
    83	if [ $1 -ge 1 ]; then
    84		if [ $start_slapd -eq 1 ]; then
    85			/usr/bin/systemctl start slapd.service &>/dev/null || :
~~~