feat: Add a default domain reclaim policy

[jonstacks]

See #641 for more context

What

Now that Domains have a Reclaim Policy, we can set a default Domain Reclaim Policy for Domains created by the operator. It respects existing created domain CRs deletion policy. For example, if a domain CR was created manually with a Reclaim Policy of Retain, and the defaultDomainReclaimPolicy is set to Delete, it will not overwrite the existing ReclaimPolicy of Retain.

How

• Add a setting for defaultDomainReclaimPolicy to the helm chart
• Pass the defaultDomainReclaimPolicy through to the driver and the Controllers that need it
• Only set the Reclaim Policy on creates

Breaking Changes

No. The current domain Reclaim Policy defaults to "Delete" and the defaultDomainReclaimPolicy mirrors this. We still do not delete Domain CRs when they drop out of scope of the driver.

[codecov]

Codecov Report

Attention: Patch coverage is 30.00000% with 63 lines in your changes missing coverage. Please review.

Project coverage is 30.84%. Comparing base (92864af) to head (34c51fb).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/api-manager.go	0.00%	16 Missing ⚠️
cmd/common.go	0.00%	14 Missing ⚠️
cmd/agent-manager.go	0.00%	12 Missing ⚠️
internal/testutils/k8s-resources.go	0.00%	10 Missing ⚠️
...rnal/controller/agent/agent_endpoint_controller.go	0.00%	4 Missing ⚠️
...ernal/controller/ngrok/cloudendpoint_controller.go	25.00%	2 Missing and 1 partial ⚠️
pkg/managerdriver/domains.go	88.00%	1 Missing and 2 partials ⚠️
pkg/managerdriver/driver.go	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #656      +/-   ##
==========================================
+ Coverage   30.73%   30.84%   +0.11%     
==========================================
  Files         100      101       +1     
  Lines       15876    15919      +43     
==========================================
+ Hits         4879     4911      +32     
- Misses      10710    10723      +13     
+ Partials      287      285       -2     

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