Allow a list of eck-agents

[JulienOrain]

Description

When using the Helm template, it's currently possible to create only one instance of each component (if my understanding is correct).

While this works well for Elasticsearch, Kibana, Logstash, and similar components, it would be beneficial to support the creation of multiple eck-agents.

Each eck-agent could have its own distinct configuration and independently apply its assigned policy without being affected by the policies managed by other agents.

Example

Suppose I have a cluster set up using a Helm chart.

Within this cluster, I deploy Elasticsearch, Kibana, a Fleet server, and an agent configured to apply policy 1.

Now, I also want to deploy another agent configured to apply policy 2.

However, with the current configuration, it seems this isn't feasible.

Thanks !