For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:matthewtaylor/openSUSE_Tumbleweed/home:matthewtaylor.repo
zypper refresh
zypper install libvirt-daemon-driver-storage-core
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:matthewtaylor/16.0/home:matthewtaylor.repo
zypper refresh
zypper install libvirt-daemon-driver-storage-core
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:matthewtaylor/15.6/home:matthewtaylor.repo
zypper refresh
zypper install libvirt-daemon-driver-storage-core