Documentation: Add extra repo info for RHEL 8
The extra development repo for RHEL 8 has changed.  Document it.
Acked-by: Yi-Hung Wei
@@ -69,6 +69,10 @@ repositories to help yum-builddep, e.g.::
$ subscription-manager repos --enable=rhel-7-server-extras-rpms
$ subscription-manager repos --enable=rhel-7-server-optional-rpms
+or for RHEL 8::
+ $ subscription-manager repos \
+ --enable=codeready-builder-for-rhel-8-x86_64-rpms
+
DNF::
$ dnf builddep /tmp/ovs.spec
