libldap-2_4-2 from home:s_liehmann:openldap2.4 project

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:s_liehmann:openldap2.4/15.5/home:s_liehmann:openldap2.4.repo
zypper refresh
zypper install libldap-2_4-2

For 15.4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:s_liehmann:openldap2.4/15.4/home:s_liehmann:openldap2.4.repo
zypper refresh
zypper install libldap-2_4-2

For SLE 12 SP5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:s_liehmann:openldap2.4/SLE_12_SP5/home:s_liehmann:openldap2.4.repo
zypper refresh
zypper install libldap-2_4-2