Для SLE 15 SP3 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP3/home:mmeszaros.repo
zypper refresh
zypper install apache2-mod_jk
Для SLE 15 SP2 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP2/home:mmeszaros.repo
zypper refresh
zypper install apache2-mod_jk
Для SLE 15 SP1 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:mmeszaros/SLE_15_SP1/home:mmeszaros.repo
zypper refresh
zypper install apache2-mod_jk