List applying policies in Channel and propagate EventPolicies to underlying channel

[creydr]

Fixes #8013

Proposed Changes

• 🎁 List EventPolicies in the channels .status.policies, which apply for it
• 🎁 Add the EventPoliciesReady condition to indicate, if the referenced policies are Ready
• 🎁 Create a copy of the EventPolicies applying for the Channel, to target the backing channel

Release Note

List applying EventPolicies in Channels status and propagate EventPolicies to backing channel

[knative-prow]

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This pull-request has been approved by: creydr

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[codecov]

Codecov Report

Attention: Patch coverage is 58.10056% with 75 lines in your changes missing coverage. Please review.

Project coverage is 67.70%. Comparing base (f4df40f) to head (1373264).
Report is 6 commits behind head on main.

Files	Patch %	Lines
pkg/reconciler/channel/channel.go	46.15%	17 Missing and 11 partials ⚠️
pkg/auth/event_policy.go	0.00%	26 Missing ⚠️
pkg/reconciler/testing/v1/eventpolicy.go	47.05%	9 Missing ⚠️
pkg/apis/messaging/v1/channel_lifecycle.go	50.00%	4 Missing ⚠️
pkg/reconciler/channel/controller.go	77.77%	2 Missing and 2 partials ⚠️
pkg/reconciler/testing/v1/channel.go	84.21%	3 Missing ⚠️
...iler/inmemorychannel/controller/inmemorychannel.go	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8014      +/-   ##
==========================================
- Coverage   67.79%   67.70%   -0.09%     
==========================================
  Files         363      364       +1     
  Lines       16899    17042     +143     
==========================================
+ Hits        11456    11538      +82     
- Misses       4735     4783      +48     
- Partials      708      721      +13     

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[creydr]

/unhold

[creydr]

@pierDipi could you recheck?

[pierDipi]

/lgtm

[pierDipi]

/test reconciler-tests