Add hourly price and instance type to env SKYPILOT_CLUSTER_INFO

[tylerweitzman]

Adds the following KV to the SKYPILOT_CLUSTER_INFO json dump

{...
'hourly_price': handle.get_hourly_price(),
'instance_type': handle.launched_resources.instance_type,
}

Ran an existing workflow with it to see the values successfully added

{"cluster_name": "sky-e72c-ubuntu", "cloud": "GCP", "region": "us-central1", "zone": "us-central1-a", "hourly_price": 0.26203, "instance_type": "n2-highmem-4"}

[Michaelvll]

Thanks for adding these new info @tylerweitzman! LGTM.

A future TODO: add these new information into our docs: https://skypilot.readthedocs.io/en/latest/running-jobs/environment-variables.html#environment-variables-for-run

Could you help run format.sh in the root folder of the repo to get our CI passed?

[Michaelvll]

Suggested change

	internal_ip=instance_info.get('private_ip', instance_info.get('ip')), # Fallback to public IP if private not available
	# Fallback to public IP if private not available
	internal_ip=instance_info.get('private_ip', instance_info.get('ip')),

This may fix the linting/formating issue : )