fix yumgroups.xml
On lines https://gitlab.cern.ch/cmsos/bril.yum/blob/master/1/cc7/x86_64/RPMS/yumgroups.xml#L36 and L40, it is requiring cmsos-core-hdf5 and cmsos-core-hdf5-devel, but the packages are actually named cmsos-bril-hdf5 and cmsos-bril-hdf5-devel. yumgroups.xml should be fixed