Support send data to remote Otel collector

[jvanz]

This issue is keep track of a subset of the changes necessary to allow Kubewarden send data to remote OpenTelemetry (Otel) collectors. As described in #931.

Currently, the controller is able to send data to a Otel collector running as sidecar. It's necessary to change exporter in the Kubewarden controller to send data to a remote Otel collector and properly configure the policy servers to do the same

Acceptance criteria

• Add a flag to signal when the Otel collector is running as sidecar.
  • Update the controller code to add the Otel sidecar injection annotation in the policy server deployments only when necessary. If the user is sending data to a remote collector, it is not necessary to add it.
• Change the code used to configure the Otel collector to consider the information from the environment variable.
• Replicate the Otel configuration defined in the controller into the policy servers deployment. Including:
  • Otel collector endpoint
  • Otel TLS configuration(e.g. insecure connections and/or certificate to be used)
  • Mount of the certificates to be used