Added serverless placeholder dir and entry in topic map (commented out for now)

_topic_map.yml

@@ -746,6 +746,13 @@ Topics:
   File: administrator-cli-commands
   Distros: openshift-enterprise,openshift-origin
 #---
+#Name: Serverless applications
+#Dir: serverless
+#Distros: openshift-enterprise
+#Topics:
+# - Name:
+#  File:
+#---
 #Name: Container-native Virtualization
 #Dir: cnv
 #Distros: openshift-enterprise
@@ -784,3 +791,4 @@ Topics:
 #  Topics:
 #  - Name: Service Mesh Release Notes Placeholder
 #    File: service-mesh-release-notes-placeholder
+#---

serverless/images

@@ -0,0 +1 @@
+../images

serverless/modules

@@ -0,0 +1 @@
+../modules