Add support for firecracker v1.0.0

Hi there,
Currently the firecracker-task-driver can't use the v1.0.0 firecracker binary because of a breaking change in firecracker. Specifically the ht_enabled field was renamed to smt and is now optional per https://github.com/firecracker-microvm/firecracker/releases/tag/v1.0.0

[cneira]

Hi there,
Currently the firecracker-task-driver can't use the v1.0.0 firecracker binary because of a breaking change in firecracker. Specifically the ht_enabled field was renamed to smt and is now optional per https://github.com/firecracker-microvm/firecracker/releases/tag/v1.0.0

Thanks a lot for letting me know, I'll start working on this as I have a spare machine now to work at home.

[cneira]

This is going to take a lot of more time than I thought, I work on this on my free time at nights after work so I'll try to return this issue I hope in the near future.