Revert mount-utils back to utils/mount

[dims]

@brahmaroutu we need to revert the change in #2687 because we are causing a recursion

• mount-utils is in staging
• k/k uses cadvisor
• cadvisor uses the k8s.io/mount-utils

So this is not going to work. So switching cadvisor back to k8s.io/utils/mount

Signed-off-by: Davanum Srinivas davanum@gmail.com

[brahmaroutu]

@dims Sorry if this caused recursion. We already moved utils/mount to staging. With cAdvisor using util/mount we will not be able to retire this package. Can you please explain why third party software cannot use staging modules?

[dims]

third party software can use staging modules IFF the third party software is not vendored back into k/k :)

[dims]

we have to live with k8s.io/utils/mount or copy that stuff over to cadvisor or find another library which is equivalent.

example : https://github.com/moby/sys/tree/master/mountinfo

But let's not rush into doing that right now, we can do in k8s 1.21 timeframe.

[brahmaroutu]

Let us address this in 1.21 ASAP. Since 90% of the work to move utils/mount into staging is already done, I would like to make this work without maintaining multiple copies of the mount library and if possible, without retreating the changes made so far.