Use get_dvswitch_hosts for host_switches

app/models/manageiq/providers/vmware/infra_manager/refresh_parser.rb

@@ -77,8 +77,7 @@ def self.dvs_inv_to_hashes(inv)
           result << new_result
           result_uids[new_result[:uid_ems]] = new_result
 
-          hosts = Array(summary["hostMember"])
-
+          hosts = get_dvswitch_hosts(inv, new_result[:uid_ems])
           hosts.each { |host_mor| result_uids[:by_host_mor][host_mor] << new_result }
         end
 
@@ -183,6 +182,13 @@ def self.storage_profile_inv_to_hashes(profile_inv, storage_uids, placement_inv)
         return result, result_uids
       end
 
+      def self.get_dvswitch_hosts(dvswitch_inv, switch_mor)
+        hosts_list = dvswitch_inv.fetch_path(switch_mor, 'config', 'host') || []
+        hosts = hosts_list.collect { |host_data| host_data.fetch_path('config', 'host') }
+        hosts += dvswitch_inv.fetch_path(switch_mor, 'summary', 'hostMember') || []
+        hosts.uniq
+      end
+
       def self.host_inv_to_hashes(inv, ems_inv, storage_uids, cluster_uids, dvs_uids)
         result = []
         result_uids = {}