if defined, use top-level replicas as default for clusters (#899)

* extractDomainResource should use the replica count when specified in the kubernetes section as the default cluster replicas count instead of the cluster size

Author: ddsharpe

core/src/main/python/wlsdeploy/tool/extract/domain_resource_extractor.py

@@ -251,8 +251,11 @@ def _update_resource_dictionary(self, resource_dict):
                 cluster_list = list()
                 spec_section[CLUSTERS] = cluster_list
                 for cluster_name, cluster_values in model_clusters.items():
-                    server_count = k8s_helper.get_server_count(cluster_name, cluster_values, self._model.get_model(),
-                                                               self._aliases)
+                    if REPLICAS in spec_section:
+                        server_count = spec_section[REPLICAS]
+                    else:
+                        server_count = k8s_helper.get_server_count(cluster_name, cluster_values,
+                                                                   self._model.get_model(), self._aliases)
                     cluster_dict = PyOrderedDict()
                     cluster_dict[CLUSTER_NAME] = cluster_name
                     cluster_dict[REPLICAS] = server_count