templates: fedora-43: disable ssh.overVsock as a workaround for SELinux issue

[AkihiroSuda]

Fix #4334

This PR also deprecates $LIMA_SSH_OVER_VSOCK and moves it to a YAML field .ssh.overVsock.

[norio-nomura]

Well, I thought it would be like this.
I thought that there would come a time to write a similar PR so that I could set it up without using usernet, so I'm lucky that I don't need to write it anymore. :-)

What should I do with #4333?
In order to change the execution method of /usr/bin/ssh, we have to modify sshocker, so I guess I postpone it.

[AkihiroSuda]

What should I do with #4333? In order to change the execution method of /usr/bin/ssh, we have to modify sshocker, so I guess I postpone it.

We may consider #4333 (and #4337) for v2.1+, but I'm still worried about the maintenance cost:

• pkg/driver/vz: Try SSH handshake to check if SSH port is available. #4337 (comment)

[norio-nomura]

We may consider #4333 (and #4337) for v2.1+, but I'm still worried about the maintenance cost:

The failure of CI should decrease, but I don't know how much it will decrease.
I don't know how to estimate the increase in maintenance costs, so I don't think I can compare either of them.

[norio-nomura]

LGTM! 👍🏻