Refactor statemachine_task_status methods into mixin

[gmcculloug]

The statemachine_task_status method exists across several service models with only minor differences and should be refactored into a common mixin.

Files to modify:

• miq_ae_service_automation_task.rb
• miq_ae_service_miq_host_provision.rb
• miq_ae_service_miq_provision.rb
• miq_ae_service_miq_provision_task.rb
• miq_ae_service_service_reconfigure_task.rb
• miq_ae_service_service_template_provision_task.rb
• miq_ae_service_vm_migrate_task.rb

[miq-bot]

This issue has been automatically marked as stale because it has not been updated for at least 6 months.

If you can still reproduce this issue on the current release or on master, please reply with all of the information you have about it in order to keep the issue open.

Thank you for all your contributions!

[gmcculloug]

These methods will most likely be moved out of the service models and into the backend models.