Initial bpfman-operator support for Load/Attach Split

[anfredette]

Initial operator support for Load/Attach Split

This commit contains the framework for using the bpfman load/attach split
support when it becomes available.

Support for both cluster-scoped and namespace-scoped CRDs for all supported
program types is included.

Key changes include:

• Updates to the BpfApplication and BpfNsApplication CRDs to support a separate list
  of optional attach points for programs. This allows programs to be loaded before
  attachments are made and enables dynamic attachment updates.
• BpfApplicationState and BpfNsApplicationState CRDs have been added to manage
  per-node information for the BpfApplication and BpfNsApplication CRDs,
  respectively.
• All files and code related to the *Program CRDs have been removed.

See TODO.md for more details about what's left to do.

[codecov]

Codecov Report

Attention: Patch coverage is 57.88618% with 259 lines in your changes missing coverage. Please review.

Project coverage is 41.79%. Comparing base (fc76814) to head (3174166).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
apis/v1alpha1/zz_generated.deepcopy.go	62.10%	192 Missing and 13 partials ⚠️
apis/v1alpha1/shared_types.go	0.00%	28 Missing ⚠️
cmd/bpfman-operator/main.go	0.00%	10 Missing ⚠️
apis/v1alpha1/bpfApplicationState_types.go	57.14%	6 Missing ⚠️
apis/v1alpha1/bpfNsApplicationState_types.go	57.14%	6 Missing ⚠️
cmd/bpfman-agent/main.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #347       +/-   ##
===========================================
+ Coverage   28.12%   41.79%   +13.67%     
===========================================
  Files         128       66       -62     
  Lines       11207     7469     -3738     
===========================================
- Hits         3152     3122       -30     
+ Misses       7773     4091     -3682     
+ Partials      282      256       -26     

Flag	Coverage Δ
unittests	41.79% <57.88%> (+13.67%)	⬆️

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[anfredette]

All of the examples will need to be updated with the new CRD format before the Kubernetes integration tests will pass.

[mergify]

@anfredette, this pull request is now in conflict and requires a rebase.

[mergify]

@anfredette, this pull request is now in conflict and requires a rebase.

[mergify]

@anfredette, this pull request is now in conflict and requires a rebase.

[anfredette]

This is still a WIP, but it's working for cluster-scoped XDP programs.

Here's a sample of the kubectl output from installing and deleting an XDP program:
https://gist.github.com/anfredette/4433aaa58518db5d4d14ed2bf4218f55

If you're looking at the code, the new operator and agent code is in the app-operator and app-agent directories, while the old code is still in bpfman-operator and bpfman-agent. I plan to eventually delete the old directories and rename the new ones, but I'm keeping the old code around for comparison and to pull from as needed.

[anfredette]

I've cleaned up the code a bit and added support for TCX and Fentry. See the TODO.md file for more details.

[mergify]

@anfredette, this pull request is now in conflict and requires a rebase.

[mergify]

@anfredette, this pull request is now in conflict and requires a rebase.