NetworkManager-openvpn from home:Simmphonie:Networkmanager project
Select Your Operating System
Add repository and install manually
For openSUSE Leap 15.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Simmphonie:Networkmanager/openSUSE_Leap_15.2/home:Simmphonie:Networkmanager.repo zypper refresh zypper install NetworkManager-openvpn