convert users to new names in mountinfo

[kolyshkin]

mountinfo v0.3.1 brought in some breaking changes (see #34, #41).

For the reference, the breaking changes are:

1. Some Mountinfo fields has been renamed:

• Fstype -> FSType
• Opts -> Options
• VfsOpts -> VFSOptions

2. One function has been renamed:

• FstypeFilter -> FSTypeFilter

It's on us to make sure all the users have a smooth transition.

So far:

• vendor: bump mountinfo to v0.3.1 containers/storage#727
• vendor: bump mountinfo v0.3.1 opencontainers/runc#2626
• moby/sys/mount: mount: bump mountinfo to v0.3.1 #44
• vendor: moby/sys mountinfo/v0.4.0 moby#41458
• vendor: bump mountinfo to v0.4.0 DataDog/datadog-agent#6495

[kolyshkin]

@thaJeztah can you try updating moby/moby?

[thaJeztah]

Will do 👍

[kolyshkin]

OK we're done here