yum from OBS:Server:2.8:Staging project
Select Your Operating System
Add repository and install manually
For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/OBS:Server:2.8:Staging/SLE_12_SP3/OBS:Server:2.8:Staging.repo zypper refresh zypper install yum
For SLE 12 SP2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/OBS:Server:2.8:Staging/SLE_12_SP2/OBS:Server:2.8:Staging.repo zypper refresh zypper install yum