Update version to v4.1.5
fix merge conflicts
add a flag for config_drive_format, default to iso9660
Merge pull request #385 from rackerjoe/v4.1.5rc

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Make scheduler_host_subset_size configurable.

Default value 1 is nova default.
Merge pull request #387 from rackerjoe/v4.1.5rc

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use shared node["osops"]["region"] attribute

remove node["nova"]["compute"]["region"] attr
Merge pull request #397 from invsblduck/v415_region_backport

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Enable send_arp_for_ha_count in nova.conf

- Add attribute for send_arp_for_ha_count in nova conf provider to match
  functionality in quantum/neutron l3_agent.ini

See https://github.com/rcbops/chef-cookbooks/issues/877

(cherry picked from commit 00ae912614f9e2691e64639f82efe942183f9bbe)
Merge pull request #400 from claco/v4.1.5rc

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Use recreate action on keystone_endpoints

Ensure that the various keystone endpoints are reconfigured when things like
https is enabled/disabled.

- Change keystone-endpoint action from :create to :recreate

See: rcbops/chef-cookbooks#590
(cherry picked from commit 3b28ea421b6d52c11c876cb2c5c0d1f054ac78c4)
Merge pull request #401 from claco/issue-590-grizzly

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