refactor!: Default TlsClientDetails to webPki

[sbernauer]

Description

DO NOT MERGE, demonstration purpose only. Also missing a Changelog entry, which warns all operators - which in turn need a BREAKING changelog entry as this is a gigabreaking change for them.

Diff e.g. in opa-operator:

--- a/deploy/helm/opa-operator/crds/crds.yaml
+++ b/deploy/helm/opa-operator/crds/crds.yaml
@@ -107,6 +107,11 @@ spec:
                                   description: Root HTTP path of the identity provider. Defaults to `/`.
                                   type: string
                                 tls:
+                                  default:
+                                    verification:
+                                      server:
+                                        caCert:
+                                          webPki: {}
                                   description: Use a TLS connection. If not specified no TLS will be used.
                                   nullable: true
                                   properties:

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

# Author
- [ ] Changes are OpenShift compatible
- [ ] CRD changes approved
- [ ] Integration tests passed (for non trivial changes)

# Reviewer
- [ ] Code contains useful comments
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added

[fhennig]

gigabreaking

lol :laughing:

[sbernauer]

lol 😆

@Techassi would be proud of me!

[Techassi]

I am! 😜

[sbernauer]

Will implement this at some point of time, but this requires an upfront announcement