Remove deprecated attributes and add alternative methods

data_type_singular and data_type_plural are deprecated.
So this patch uses action_present and action_past methods
instead of these attributes.
In addition this patch fixes cannot login recent horizon.

Story: 2001020
Task: 4218

Change-Id: I925c1bd6c66a88da75cdc6e8361f1e8006d9246b
Reference: https://docs.openstack.org/developer/horizon/ocata/ref/tables.html#horizon.tables.DeleteAction.data_type_singular

monitoring/alarmdefs/tables.py

@@ -14,6 +14,7 @@
 
 from django.core import urlresolvers
 from django.utils.translation import ugettext_lazy as _  # noqa
+from django.utils.translation import ungettext_lazy
 
 from horizon import tables
 
@@ -53,8 +54,22 @@ class EditAlarm(tables.LinkAction):
 class DeleteAlarm(tables.DeleteAction):
     name = "delete_alarm"
     verbose_name = _("Delete Alarm Definition")
-    data_type_singular = _("Alarm Definition")
-    data_type_plural = _("Alarm Definitions")
+
+    @staticmethod
+    def action_present(count):
+        return ungettext_lazy(
+            u"Delete Alarm Definition",
+            u"Delete Alarm Definitions",
+            count
+        )
+
+    @staticmethod
+    def action_past(count):
+        return ungettext_lazy(
+            u"Deleted Alarm Definition",
+            u"Deleted Alarm Definitions",
+            count
+        )
 
     def allowed(self, request, datum=None):
         return True

monitoring/alarms/tables.py

@@ -19,6 +19,7 @@ from django.core import urlresolvers
 from django.core.urlresolvers import reverse_lazy
 from django import template
 from django.utils.translation import ugettext_lazy as _  # noqa
+from django.utils.translation import ungettext_lazy
 
 from horizon import tables
 
@@ -195,8 +196,22 @@ class ShowAlarmDefinition(tables.LinkAction):
 class DeleteAlarm(tables.DeleteAction):
     name = "delete_alarm"
     verbose_name = _("Delete Alarm")
-    data_type_singular = _("Alarm")
-    data_type_plural = _("Alarms")
+
+    @staticmethod
+    def action_present(count):
+        return ungettext_lazy(
+            u"Delete Alarm",
+            u"Delete Alarms",
+            count
+        )
+
+    @staticmethod
+    def action_past(count):
+        return ungettext_lazy(
+            u"Deleted Alarm",
+            u"Deleted Alarms",
+            count
+        )
 
     def allowed(self, request, datum=None):
         return True

monitoring/notifications/tables.py

@@ -14,6 +14,7 @@
 
 from django.core import urlresolvers
 from django.utils.translation import ugettext_lazy as _  # noqa
+from django.utils.translation import ungettext_lazy
 
 from horizon import exceptions
 from horizon import tables
@@ -25,8 +26,22 @@ from monitoring.notifications import constants
 class DeleteNotification(tables.DeleteAction):
     name = "delete_notification"
     verbose_name = _("Delete Notification")
-    data_type_singular = _("Notification")
-    data_type_plural = _("Notifications")
+
+    @staticmethod
+    def action_present(count):
+        return ungettext_lazy(
+            u"Delete Notification",
+            u"Delete Notifications",
+            count
+        )
+
+    @staticmethod
+    def action_past(count):
+        return ungettext_lazy(
+            u"Deleted Notification",
+            u"Deleted Notifications",
+            count
+        )
 
     def allowed(self, request, datum=None):
         return True