Add page size check in check-config command

[cncal]

Is your feature request related to a problem? Please describe.

When I trying to deploy k3s on my arm64 servers, I noticed an important note in https://docs.k3s.io/installation/requirements#architecture that the OS must use a 4k page size, but nothing abnormal when I run the k3s check-config command. Considering that page size isn't 4k does have serious consequences (#6708), I think it's necessary to add page size check in k3s check-config if the machine architecture is aarch64/arm64.

Describe the solution you'd like

Add page size check in k3s check-config if the machine architecture is aarch64/arm64.

Describe alternatives you've considered

Print a warning log when k3s service starts.

Additional context

None.

[dereknola]

This will likely be fixed in the next release. See k3s-io/k3s-root#59