Bump containerd to v1.7.0 and move back into multicall binary

[brandond]

Proposed Changes

Restores containerd to the multicall binary, saving approximately 11MB off the shipping binary size.

This reverts much of #4757

Types of Changes

enhancement

Verification

Check k3s binary size:

k3s binary dist/artifacts/k3s size 68517888 is less than max acceptable size of 73400320 bytes (70 MiB) // current master
k3s binary dist/artifacts/k3s size 56868864 is less than max acceptable size of 73400320 bytes (70 MiB) // this PR

Testing

Linked Issues

• Move containerd back into the main multicall binary #7419

User-Facing Change

The embedded containerd version has been bumped to `v1.7.0-k3s1`, and has been reintegrated into the main k3s binary for a significant savings in release artifact size.

Further Comments

Includes fix for CRI stats, pushed to upstream as containerd/containerd#8472

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -28.16 ⚠️

Comparison is base (239021e) 47.64% compared to head (1532da1) 19.48%.

❗ Current head 1532da1 differs from pull request most recent head 260ff9d. Consider uploading reports for the commit 260ff9d to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #7418       +/-   ##
===========================================
- Coverage   47.64%   19.48%   -28.16%     
===========================================
  Files         139       81       -58     
  Lines       14254     5497     -8757     
===========================================
- Hits         6791     1071     -5720     
+ Misses       6390     4204     -2186     
+ Partials     1073      222      -851     

Flag	Coverage Δ
inttests	?
unittests	19.48% <ø> (-0.40%)	⬇️

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see 139 files with indirect coverage changes

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[dereknola]

Waiting on changeover to k3s-io