skypilot [k8s] Move socat/netcat dependency checks to `sky check` for k8s

From https://github.com/skypilot-org/skypilot/pull/3128#discussion_r1484898523:

During the sky check can we check the installation of socat as well? I only got the error when I am running sky launch -c test-k8s --cloud kubernetes after my sky check shows kubernetes enabled.

Feb 28 '24 18:02 romilbhardwaj

This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 10 days.

Jun 28 '24 01:06 github-actions[bot]

This issue was closed because it has been stalled for 10 days with no activity.

Jul 08 '24 01:07 github-actions[bot]

This is still relevant? @romilbhardwaj

Jul 08 '24 01:07 Michaelvll

Yes, needs to be closed with #3306

Jul 08 '24 02:07 romilbhardwaj

This issue is stale because it has been open 120 days with no activity. Remove stale label or comment or this will be closed in 10 days.

Nov 06 '24 01:11 github-actions[bot]

This issue was closed because it has been stalled for 10 days with no activity.

Nov 16 '24 02:11 github-actions[bot]