Enable containerd aufs/devmapper/zfs snapshotter plugins

[brandond]

Proposed Changes

Enable containerd aufs/devmapper/zfs snapshotter plugins

These were unintentionally dropped when moving containerd back into the main multicall binary

Types of Changes

bugfix

Verification

1. Start K3s
2. grep type=io.containerd.snapshotter.v1 /var/lib/rancher/k3s/agent/containerd/containerd.log. Check for plugins:

time="2023-06-01T16:16:29.774504348Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.aufs\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.777739321Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.btrfs\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.777919781Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.devmapper\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.777953832Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.native\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.778025248Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.overlayfs\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.778248703Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.fuse-overlayfs\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.778323197Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.stargz\"..." type=io.containerd.snapshotter.v1
time="2023-06-01T16:16:29.782237739Z" level=info msg="loading plugin \"io.containerd.snapshotter.v1.zfs\"..." type=io.containerd.snapshotter.v1

Testing

Linked Issues

• Containerd aufs/devmapper/zfs snapshotters removed from May 2023 releases #7660
• Plans for ZFS support? #3980 (zfs was unintentionally enabled when we stopped building containerd into the main multicall binary a while back, but apparently no-one noticed)

User-Facing Change

The bundled containerd's aufs/devmapper/zfs snapshotter plugins have been restored. These were unintentionally omitted when moving contaienrd back into the k3s multicall binary in the previous release.

Further Comments

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -25.16 ⚠️

Comparison is base (b64a226) 45.00% compared to head (f03db50) 19.85%.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #7661       +/-   ##
===========================================
- Coverage   45.00%   19.85%   -25.16%     
===========================================
  Files         138       81       -57     
  Lines       14262     7640     -6622     
===========================================
- Hits         6419     1517     -4902     
+ Misses       6757     5894      -863     
+ Partials     1086      229      -857     

Flag	Coverage Δ
inttests	?
unittests	19.85% <ø> (?)

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see 124 files with indirect coverage changes

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