Delete "all" clusters still only deletes in pages of 50

[pm17788]

Issue type

[ ] Feature request
[x] Bug report
[ ] Documentation

Environment

• Python version: 3.5.4
• NetBox version: 2.3.2

Description

• Go to Virtualization -> Clusters, click on the checkbox by the Name column heading, and get prompted to Select all XXYY clusters matching query.
• Click Delete All
• The confirmation page which comes up shows only 50 clusters.
  • Confirming the delete action also only deletes just the 50.

[jeremystretch]

This affects all object types without a filter set under its bulk deletion view. Added the missing filter for virtualization.Cluster as well as dcim.Region, and tweaked BulkDeleteView to accommodate queryset-based deletion for objects without a filter.

Also raised #2101 to ensure that every object gets a filter in the interest of consistency.

[jeremystretch]

Fixed in 399a633. Not sure what happened with the commit message.