Fix hostNetwork data plane pod connection issue (#4481)

[sjberman]

Cherrypick of #4481

Problem: When hostNetwork was enabled, the data plane pod would connect and give us its hostname, which was the name of the node instead of the pod. This would cause issues internally with both tracking and acquiring the pod's owner so we know which config to send to it.

Solution: Add the owner's name and type via labels in the agent config. These labels are then sent to the control plane when an agent connects, and can be used to determine which configuration to send. Updated all trackin to use the UUID instead of pod name.

Testing: Enabling hostNetwork now allows the nginx pod to connect.

Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes,
please add a brief note that summarizes the change.

Fix an issue where nginx pod could not connect to control plane when hostnetwork is enabled.

[codecov]

Codecov Report

❌ Patch coverage is 80.16529% with 24 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.20%. Comparing base (f599851) to head (f755b49).
⚠️ Report is 1 commits behind head on release-2.3.

Files with missing lines	Patch %	Lines
internal/controller/nginx/agent/command.go	77.31%	19 Missing and 3 partials ⚠️
internal/controller/provisioner/provisioner.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@               Coverage Diff               @@
##           release-2.3    #4483      +/-   ##
===============================================
+ Coverage        86.18%   86.20%   +0.01%     
===============================================
  Files              132      132              
  Lines            14560    14570      +10     
  Branches            35       35              
===============================================
+ Hits             12549    12560      +11     
- Misses            1795     1798       +3     
+ Partials           216      212       -4     

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