Openshift existing resources won't merge route spec

[indiealexh]

Describe the bug

The default Route resource created has no programmatic means to apply TLS config.
Upon reading https://quarkus.io/guides/deploying-to-kubernetes#using-existing-resources I assumed I could create an src/main/kubernetes/openshift.yml file like this:

apiVersion: route.openshift.io/v1
kind: Route
metadata:
  name: example-api
spec:
  tls:
    termination: edge
    insecureEdgeTerminationPolicy: Redirect

and it could generated something like this:

---
apiVersion: route.openshift.io/v1
kind: Route
metadata:
  annotations:
    app.openshift.io/vcs-url: <<unknown>>
    app.quarkus.io/commit-id: <<example>>
    app.quarkus.io/build-timestamp: <<example>>
  labels:
    app.openshift.io/runtime: quarkus
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/name: example-api
    app.kubernetes.io/part-of: core
  name: example-api
spec:
  host: example-api.hostname.com
  port:
    targetPort: http
  tls:
    insecureEdgeTerminationPolicy: Redirect
    termination: edge
  to:
    kind: Service
    name: colony-legacy-api

But instead it omits everything it would normally generate except annotations and labels:

apiVersion: route.openshift.io/v1
kind: Route
metadata:
  annotations:
    app.openshift.io/vcs-url: <<unknown>>
    app.quarkus.io/commit-id: <<example>>
    app.quarkus.io/build-timestamp: <<example>>
  labels:
    app.openshift.io/runtime: quarkus
    app.kubernetes.io/version: 1.0.0
    app.kubernetes.io/name: example-api
    app.kubernetes.io/part-of: core
  name: example-api
spec:
  tls:
    insecureEdgeTerminationPolicy: Redirect
    termination: edge

Quarkus version or git rev

2.15.0

[quarkus-bot]

/cc @Sgitario(kubernetes), @geoand(kubernetes,openshift), @iocanel(kubernetes,openshift)

[Sgitario]

This needs to be fixed first in Dekorate: dekorateio/dekorate#1112