CP-23740 (Feature/1.0.3 beta release): Validate KSM Metrics at Install

[bdrennz]

This PR modifies the kube_state_metrics_reachable command by including the full list of KSM metrics passed by the chart, rather than the hardcoded subset used during testing.

The base branch is feature/1.0.2-beta-release since these changes will be for beta 1.0.3.

Testing
Below is the output of the CloudZero Agent Server post-start job. If you notice, the logs outline the metrics being validated, eventually leading to a passing status for kube_state_metrics_reachable:

{
  "level": "info",
  "log_sequence": 1,
  "msg": "Using endpoint URL: http://cloudzero-state-metrics.prom-agent.svc.cluster.local:8080/metrics",
  "op": "ksm",
  "time": "2024-12-03T21:52:29Z"
}
{
  "level": "error",
  "log_sequence": 2,
  "msg": "Failed to fetch metrics on attempt 1: Get \"http://cloudzero-state-metrics.prom-agent.svc.cluster.local:8080/metrics\": dial tcp 10.100.123.115:8080: connect: connection refused",
  "op": "ksm",
  "time": "2024-12-03T21:52:29Z"
}
{
  "level": "info",
  "log_sequence": 3,
  "msg": "Found required metric kube_node_info on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 4,
  "msg": "Found required metric kube_node_status_capacity on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 5,
  "msg": "Found required metric kube_pod_container_resource_limits on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 6,
  "msg": "Found required metric kube_pod_container_resource_requests on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 7,
  "msg": "Found required metric kube_pod_labels on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 8,
  "msg": "Found required metric kube_pod_info on attempt 2",
  "op": "ksm",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 9,
  "msg": "reporting status",
  "report": "{
    ...
  {\"name\":\"prometheus_version\",\"passing\":true},{\"name\":\"kube_state_metrics_reachable\",\"passing\":true}]}",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 10,
  "msg": "marshalled cluster status: 5683 bytes",
  "time": "2024-12-03T21:52:39Z"
}
{
  "level": "info",
  "log_sequence": 11,
  "msg": "compressed size is: 5683 bytes",
  "time": "2024-12-03T21:52:39Z"
}

Checklist

• I have added documentation for new/changed functionality in this PR
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not main