Firecracker expose metrics through fifo file
and using a JSON format. This PR will parse the
Firecracker's metrics and convert to Prometheus metrics.
Fixes: #472
Signed-off-by: bin liu <bin@hyper.sh>
Sync the api from the runtime codes to the documentation. Remove and add
some apis in the kata-api-design.md doc. And new table for Sandbox
Monitor APIs.
Fixes: #701
Signed-off-by: Ychau Wang <wangyongchao.bj@inspur.com>