We were considering all empty-dir k8s volumes as backed by tmpfs.
However they can be backed by a host directory as well.
Pass those as 9p volumes, while tmpfs volumes are handled as before,
namely creating a tmpfs directory inside the guest.
The only way to detect "Memory" empty-dirs is to actually check if the
volume is mounted as a tmpfs mount, since any information of k8s
"medium" is lost at the OCI layer.
Fixes#1341
Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>
Refactor the config related codes into a separated
package which can be shared with other cli programs
such as kata's shimv2.
Fixes: #787Fixes: #714
Signed-off-by: fupan <lifupan@gmail.com>