[FEATURE] Custom collector config

[ktibi]

Once infrastructure monitoring is up and running, it should be possible to collect customizable sources of metrics.

It should be possible to add customizable configuration code for the scrape_configs part to create custom jobs.

For example, collect a prometheus endpoint directly from the adot collector.

Example :

module "eks_monitoring" {
.....
custom_jobs = <<EOF
  - job_name: nxrm
    scrape_interval: 15s
    scrape_timeout: 10s
    metrics_path: /service/metrics/prometheus
    scheme: http
    basic_auth:
      username: admin
      password: admin123
    static_configs:
    - targets:
      - host.docker.internal:8081
EOF
....
}