specify replicas in wdt model (#3231)

Author: alai8

kubernetes/samples/scripts/create-fmw-infrastructure-domain/domain-home-on-pv/wdt_k8s_model_template.yaml

@@ -52,6 +52,8 @@ kubernetes:
     # data storage directories are determined from the WebLogic domain home configuration.
     dataHome: "%DATA_HOME%"
 
+    replicas: %INITIAL_MANAGED_SERVER_REPLICAS%
+
     # serverStartPolicy legal values are "NEVER", "IF_NEEDED", or "ADMIN_ONLY"
     # This determines which WebLogic Servers the Operator will start up when it discovers this Domain
     # - "NEVER" will not start any server in the domain