Disable STI on AR subclasses used for migrations

db/migrate/20140409134713_move_log_collection_depot_settings_to_file_depot.rb

@@ -7,7 +7,9 @@ class Configuration < ActiveRecord::Base
     serialize :settings, Hash
   end
 
-  class FileDepot < ActiveRecord::Base; end
+  class FileDepot < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   class MiqServer < ActiveRecord::Base; end
 

db/migrate/20150907095639_add_container_image_digest.rb

@@ -2,7 +2,9 @@ class AddContainerImageDigest < ActiveRecord::Migration[4.2]
   # https://github.com/docker/distribution/blob/v2.1.1/digest/digester.go#L15-L17
   SUPPORTED_DIGESTS = 'sha256', 'sha384', 'sha512'
 
-  class ContainerImage < ActiveRecord::Base; end
+  class ContainerImage < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   def up
     add_column :container_images, :digest, :string

db/migrate/20160322195653_move_switch_host_to_jointable.rb

@@ -5,6 +5,7 @@ class Host < ActiveRecord::Base
   end
 
   class Switch < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
     belongs_to :host, :class_name => 'MoveSwitchHostToJointable::Host'
   end
 

db/migrate/20160322205357_remove_host_id_from_switch.rb

@@ -6,6 +6,7 @@ class Host < ActiveRecord::Base
   end
 
   class Switch < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
     has_many :host_switches, :dependent => :destroy, :class_name => 'RemoveHostIdFromSwitch::HostSwitch'
     has_many :hosts, :through => :host_switches, :class_name => 'RemoveHostIdFromSwitch::Host'
   end

db/migrate/20160829134746_remove_atomic_container_providers.rb

@@ -33,7 +33,10 @@ class MiqWorker < ActiveRecord::Base
     self.inheritance_column = :_type_disabled
   end
 
-  class Authentication < ActiveRecord::Base; end
+  class Authentication < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
+
   class MiqQueue < ActiveRecord::Base; end
 
   def up

db/migrate/20170217220618_remove_central_admin_region_auth_records.rb

@@ -1,5 +1,7 @@
 class RemoveCentralAdminRegionAuthRecords < ActiveRecord::Migration[5.0]
-  class Authentication < ActiveRecord::Base; end
+  class Authentication < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   def up
     Authentication.where(:resource_type => 'MiqRegion').delete_all

db/migrate/20170222105117_remove_openshift_enterprise_provider.rb

@@ -22,7 +22,10 @@ class MiqWorker < ActiveRecord::Base
     self.inheritance_column = :_type_disabled
   end
 
-  class Authentication < ActiveRecord::Base; end
+  class Authentication < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
+
   class MiqQueue < ActiveRecord::Base; end
 
   def up

db/migrate/20170222214902_add_initiator_to_service.rb

@@ -1,5 +1,7 @@
 class AddInitiatorToService < ActiveRecord::Migration[5.0]
-  class Service < ActiveRecord::Base; end
+  class Service < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   def up
     add_column :services, :initiator, :string, :comment => "Entity that initiated the service creation"

db/migrate/20170409083720_add_enabled_field_to_ems.rb

@@ -1,5 +1,7 @@
 class AddEnabledFieldToEms < ActiveRecord::Migration[5.0]
-  class ExtManagementSystem < ActiveRecord::Base; end
+  class ExtManagementSystem < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   def change
     add_column :ext_management_systems, :enabled, :boolean

db/migrate/20170704102536_use_deleted_on_in_containers_tables.rb

@@ -7,6 +7,7 @@ class ContainerGroup < ActiveRecord::Base
   end
 
   class ContainerImage < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
   end
 
   class ContainerProject < ActiveRecord::Base

db/migrate/20170718111834_unify_container_definition_and_container.rb

@@ -7,6 +7,7 @@ class ContainerDefinition < ActiveRecord::Base
   end
 
   class Container < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
     belongs_to :container_definition, :class_name => 'UnifyContainerDefinitionAndContainer::ContainerDefinition'
   end
 

db/migrate/20171117201600_downcase_resource_group_ems_ref_for_azure.rb

@@ -1,5 +1,7 @@
 class DowncaseResourceGroupEmsRefForAzure < ActiveRecord::Migration[5.0]
-  class ResourceGroup < ActiveRecord::Base; end
+  class ResourceGroup < ActiveRecord::Base
+    self.inheritance_column = :_type_disabled
+  end
 
   def up
     say_with_time("Downcase ems_ref for Azure resource groups") do