Processes: mess with target_info's instance attribute (OTEL export)

[mariomac]

Process dashboards show the following error:

Causes:

• Dashboard needs to join process metrics and target_info
• only one instance of target_info is allowed for each instance attribute
• however, Beyla can create two target_info for the same resource:
  1. when Beyla receives process metrics before it gets the Kubernetes metadata, creates a target_info
  2. when Beyla receives the K8s metadata, creates a new target_info for the same instance ID, but with different attributes

Captures of a query for a given target_info following a given instanceID

Observe that there are also two target_info entries that do not show any process resource information. This means that another duplicity is added: target-info of applications and target-info of processes.