add-test-linux_rootfs_propagation

[saku3]

This implements the validation linux_rootfs_propagation in #361

[saku3]

I'm not sure if this is related, but this issue might be relevant:
opencontainers/runc#1755

[YJDoc2]

Hey, thanks for the PR! I will try to take a look soon. In the meantime, can you rebase on main and fix the conflicts? Thanks!

[utam0k]

It appears not to pass CI. May I ask you to check it?

[saku3]

@utam0k @YJDoc2

When I run just validate-contest-runc locally, it fails in the same way as in the CI.(rootfs_propagation_shared_test)

# Start group rootfs_propagation
1 / 4 : rootfs_propagation_private_test : ok
2 / 4 : rootfs_propagation_shared_test : not ok
        container stderr was not empty, found : Error: shared root propagation failed to expose "/tmp/target9AGYIG/tmp/mountJk8Iig/example"

3 / 4 : rootfs_propagation_slave_test : ok
4 / 4 : rootfs_propagation_unbindable_test : ok
# End group rootfs_propagation

I also checked the following issue, but I'm not sure if it's related:
opencontainers/runc#1755

I will continue investigating this on my side, but I would appreciate any advice you could provide.

[utam0k]

@saku3 Let me make sure the premise that runtime-tools only tests if the container comes up with shared option, right?
How about referring to runc's e2e?
https://github.com/opencontainers/runc/blob/81b13172bea2e6e4cf50f6bdd29a5fdeb5a6acf5/libcontainer/integration/exec_test.go#L1240