added STI model ManageIQ::Providers::InfraManager::ExternalDistributedVirtualSwitch

Author: ahrechushkin

app/models/manageiq/providers/infra_manager.rb

@@ -4,6 +4,7 @@ class InfraManager < BaseManager
 
     has_many :distributed_virtual_switches, :dependent => :destroy, :foreign_key => :ems_id, :inverse_of => :ext_management_system
     has_many :distributed_virtual_lans, -> { distinct }, :through => :distributed_virtual_switches, :source => :lans
+    has_many :external_distributed_virtual_switches, :dependent => :destroy, :foreign_key => :ems_id, :inverse_of => :ext_management_system
     has_many :host_virtual_switches, -> { distinct }, :through => :hosts
     has_many :host_virtual_lans, -> { distinct }, :through => :hosts
 

app/models/manageiq/providers/infra_manager/external_distributed_virtual_switch.rb

@@ -0,0 +1,3 @@
+class ManageIQ::Providers::InfraManager::ExternalDistributedVirtualSwitch < Switch
+  belongs_to :ext_management_system, :foreign_key => :ems_id, :inverse_of => :external_distributed_virtual_switches, :class_name => "ManageIQ::Providers::InfraManager"
+end