Reduced downtime migrations (warm migrations)

[mberube99]

Migration plans should offer 2 migration options:

• Cold migration : Faster but requires downtime during the full migration process
• Warm migration: Slower as data is copied while the VM is running and the VM is only rebooted at the end of the migration process.

[ This feature is currently scheduled for IMS 1.2 only ]

[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!

[mturley]

Using this as the umbrella issue for warm migration, will close when all related PRs are merged.