[syntetic integrations] create a mutating webhook to automaticall inject pod label when missing

[lburgazzoli]

Requirement

Make it easier for user to let camel-k monitor external integrations

Problem

camel-k has now the ability to monitor integration deployed by external tools, however it requires some special set-up as it requires that any Pod to carry the camel.apache.org/integration label. In order to make ti easier for user to let camel-k monitor such integrations, we should reduce the amount of work expected by users.

Proposal

A MutatingWebhook in Kubernetes is a type of webhook that allows for modifying resources before they are persisted in the Kubernetes API server: we can leverage such feature to automatically inject the required pod labels

Open questions

No response