Add several changes to Instance Groups

Add several changes to API and UI related to Instance Groups.

* Update summary_fields for DEFAULT_CONTROL_PLANE_QUEUE_NAME, and
  DEFAULT_EXECUTION_QUEUE_NAME. Rely on API validation for those fields.

* Fix Instance Group list RBAC

* Add validation for a couple of fields on the Instance Groups endpoint
	1. is_container_group
	2. policy_instance_percentage
	3. policy_instance_list

See: https://github.com/ansible/awx/issues/11130
Also: https://github.com/ansible/awx/issues/11718

awx/api/views/__init__.py

@@ -105,7 +105,6 @@ from awx.api.permissions import (
     ProjectUpdatePermission,
     InventoryInventorySourcesUpdatePermission,
     UserPermission,
-    InstanceGroupTowerPermission,
     VariableDataPermission,
     WorkflowApprovalPermission,
     IsSystemAdminOrAuditor,
@@ -480,7 +479,6 @@ class InstanceGroupDetail(RelatedJobsPreventDeleteMixin, RetrieveUpdateDestroyAP
     name = _("Instance Group Detail")
     model = models.InstanceGroup
     serializer_class = serializers.InstanceGroupSerializer
-    permission_classes = (InstanceGroupTowerPermission,)
 
     def update_raw_data(self, data):
         if self.get_object().is_container_group: