OVO: Remove child_versions from list classes

On commit f0d34b7d9b we changed the way we
did backports for OVOs during upgrades removing the need to have or
maintain `child_versions` fields in our OVO list classes.

This patch removes these fields that were introduced afterwards
including some that had the field incorrectly defined as
`child_version`.

TrivialFix

Change-Id: I4308d5ad20175002d0924bd814a72e96b4119381

cinder/objects/group.py

@@ -171,9 +171,6 @@ class GroupList(base.ObjectListBase, base.CinderObject):
     fields = {
         'objects': fields.ListOfObjectsField('Group')
     }
-    child_version = {
-        '1.0': '1.0',
-    }
 
     @classmethod
     def get_all(cls, context, filters=None, marker=None, limit=None,

cinder/objects/group_snapshot.py

@@ -133,9 +133,6 @@ class GroupSnapshotList(base.ObjectListBase, base.CinderObject):
     fields = {
         'objects': fields.ListOfObjectsField('GroupSnapshot')
     }
-    child_version = {
-        '1.0': '1.0'
-    }
 
     @classmethod
     def get_all(cls, context, filters=None, marker=None, limit=None,

cinder/objects/group_type.py

@@ -102,10 +102,6 @@ class GroupTypeList(base.ObjectListBase, base.CinderObject):
         'objects': fields.ListOfObjectsField('GroupType'),
     }
 
-    child_versions = {
-        '1.0': '1.0',
-    }
-
     @classmethod
     def get_all(cls, context, inactive=0, filters=None, marker=None,
                 limit=None, sort_keys=None, sort_dirs=None, offset=None):

cinder/objects/qos_specs.py

@@ -192,9 +192,6 @@ class QualityOfServiceSpecsList(base.ObjectListBase, base.CinderObject):
     fields = {
         'objects': fields.ListOfObjectsField('QualityOfServiceSpecs'),
     }
-    child_versions = {
-        '1.0': '1.0',
-    }
 
     @classmethod
     def get_all(cls, context, *args, **kwargs):

cinder/tests/unit/objects/test_objects.py

@@ -41,7 +41,7 @@ object_data = {
     'ManageableVolume': '1.0-5fd0152237ec9dfb7b5c7095b8b09ffa',
     'ManageableVolumeList': '1.0-15ecf022a68ddbb8c2a6739cfc9f8f5e',
     'QualityOfServiceSpecs': '1.0-0b212e0a86ee99092229874e03207fe8',
-    'QualityOfServiceSpecsList': '1.0-1b54e51ad0fc1f3a8878f5010e7e16dc',
+    'QualityOfServiceSpecsList': '1.0-15ecf022a68ddbb8c2a6739cfc9f8f5e',
     'RequestSpec': '1.1-b0bd1a28d191d75648901fa853e8a733',
     'Service': '1.4-c7d011989d1718ca0496ccf640b42712',
     'ServiceList': '1.1-15ecf022a68ddbb8c2a6739cfc9f8f5e',
@@ -55,7 +55,7 @@ object_data = {
     'VolumeType': '1.3-a5d8c3473db9bc3bbcdbab9313acf4d1',
     'VolumeTypeList': '1.1-15ecf022a68ddbb8c2a6739cfc9f8f5e',
     'GroupType': '1.0-d4a7b272199d0b0d6fc3ceed58539d30',
-    'GroupTypeList': '1.0-1b54e51ad0fc1f3a8878f5010e7e16dc',
+    'GroupTypeList': '1.0-15ecf022a68ddbb8c2a6739cfc9f8f5e',
     'Group': '1.1-bd853b1d1ee05949d9ce4b33f80ac1a0',
     'GroupList': '1.0-15ecf022a68ddbb8c2a6739cfc9f8f5e',
     'GroupSnapshot': '1.0-9af3e994e889cbeae4427c3e351fa91d',