Support 8.3 install

In 8.3, they refactored how network configuration is
managed early in install. Fix by detecting the presence
of the nm-lib and calling it's function again to
re-read the new cmdline.

confluent_osdeploy/el8/initramfs/usr/lib/dracut/hooks/initqueue/01-confluent.sh

@@ -106,4 +106,8 @@ while read -r entry; do
         continue
     fi
 done < /etc/confluent/confluent.deploycfg
+if [ -e /lib/nm-lib.sh ]; then
+    . /lib/nm-lib.sh
+    nm_generate_connections
+fi