RPMs for SLES 12 and OpenSuSE Leap 42.2 are in the repos of the SuSE Build
Service at

http://download.opensuse.org/repositories/home:/glusterfs:/SLES12-3.8/SLE_12_SP2/

http://download.opensuse.org/repositories/home:/glusterfs:/Leap42.2-3.8/openSUSE_Leap_42.2/