feat: Graduate ExpansionTemplate CRD to beta

[davis-haba]

Upgrade ExpansionTemplate CRD to beta, and enable the workload expansion feature by default.

[codecov-commenter]

Codecov Report

Patch coverage: 80.00% and project coverage change: +0.06 🎉

Comparison is base (1878de1) 53.49% compared to head (ade1218) 53.56%.

❗ Current head ade1218 differs from pull request most recent head 799c12b. Consider uploading reports for the commit 799c12b to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2857      +/-   ##
==========================================
+ Coverage   53.49%   53.56%   +0.06%     
==========================================
  Files         133      133              
  Lines       11536    11536              
==========================================
+ Hits         6171     6179       +8     
+ Misses       4887     4880       -7     
+ Partials      478      477       -1     

Flag	Coverage Δ
unittests	53.56% <80.00%> (+0.06%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/controller/expansion/expansion_controller.go	52.29% <75.00%> (ø)
pkg/expansion/system.go	72.04% <100.00%> (ø)

... and 2 files with indirect coverage changes

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[maxsmythe]

1 note.

Also one other thought: do we want to change the controller to read v1beta1 expansion templates? Operationally it doesn't make a difference, but might avoid a surprise if we deprecate alpha (which is not a thing we've ever done).

I don't think I care either way.

[davis-haba]

1 note.

Also one other thought: do we want to change the controller to read v1beta1 expansion templates? Operationally it doesn't make a difference, but might avoid a surprise if we deprecate alpha (which is not a thing we've ever done).

I don't think I care either way.

@maxsmythe I updated the expansion controllers to read v1beta1

[maxsmythe]

LGTM

[ritazh]

LGTM