For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ae40515:branches:Cloud:Tools/openSUSE_Tumbleweed/home:ae40515:branches:Cloud:Tools.repo
zypper refresh
zypper install cloud-init
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ae40515:branches:Cloud:Tools/15.5/home:ae40515:branches:Cloud:Tools.repo
zypper refresh
zypper install cloud-init
For 15.4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ae40515:branches:Cloud:Tools/15.4/home:ae40515:branches:Cloud:Tools.repo
zypper refresh
zypper install cloud-init
For 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:ae40515:branches:Cloud:Tools/15.3/home:ae40515:branches:Cloud:Tools.repo
zypper refresh
zypper install cloud-init