Adjust EL7 package list
Adjust EL7 package list

Packages in EL8 do not apply to EL7

jjohnson42/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,jjohnson42/confluent,jjohnson42/confluent,xcat2/confluent,xcat2/confluent,jjohnson42/confluent,xcat2/confluent