Add another Rome model (#553)

* Add another Rome model

* Add option to force enable intranet on single node

* Limit p2p channels to number of ranks

* Refine p2p channels handling

[ROCm/rccl commit: ef499c4810]

projects/rccl/tools/scripts/topo_val.sh

@@ -21,7 +21,7 @@
 
 DIR="$(cd -P "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-for i in {0..76}
+for i in {0..78}
 do
 	if [[ $i -eq 50 ]] || [[ $i -eq 51 ]]
 	then