go from devel:CaaSP:1.0:velum project

Select Your Operating System

For SLE 12 SP3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/devel:CaaSP:1.0:velum/SLE_12_SP3/devel:CaaSP:1.0:velum.repo
zypper refresh
zypper install go