Add missed resource MCP2::NetworkIronicFlat

Related-Prod: PRODX-3456
Change-Id: I3bd63c1e8c168969f1b182f93c83ffb2fe754309
diff --git a/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp2-gtw0.yaml b/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp2-gtw0.yaml
index 662f8e0..3b801a5 100644
--- a/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp2-gtw0.yaml
+++ b/de/heat-templates/env/bmt402-mstr1-wrkr3-cmp2-gtw0.yaml
@@ -1,6 +1,7 @@
 resource_registry:
   "MCP2::NetworkAcc": ../fragments/NetworkAccBM.yaml
   "MCP2::NetworkPrvFl": ../fragments/NetworkPrvFl.yaml
+  "MCP2::NetworkIronicFlat": ../fragments/NetworkIronicFlat.yaml
   "MCP2::SrvInstances": ../fragments/SrvInstancesBM.yaml
   "MCP2::NetworkAccStorage": ../fragments/NetworkAccVMStorage.yaml
   "MCP2::SrvInstancesCeph": ../fragments/SrvInstancesBMCeph.yaml