NSX: add back removed code for NSX (apache#9435)

This code snippet has been removed in the merge forward of PR apache#9240
in commit 90fe1d5

Author: weizhouapache

engine/orchestration/src/main/java/org/apache/cloudstack/engine/orchestration/NetworkOrchestrator.java

@@ -1074,6 +1074,12 @@ private NicVO checkForRaceAndAllocateNic(final NicProfile requested, final Netwo
                 return null;
             }
 
+            if (isNicAllocatedForNsxPublicNetworkOnVR(network, profile, vm)) {
+                String guruName = "NsxPublicNetworkGuru";
+                NetworkGuru nsxGuru = AdapterBase.getAdapterByName(networkGurus, guruName);
+                nsxGuru.allocate(network, profile, vm);
+            }
+
             if (isDefaultNic != null) {
                 profile.setDefaultNic(isDefaultNic);
             }