Sanitize regex denylist in ksm-lite addon

[arajkumar]

The following metrics are missing from kube-state-metrics:

• kube_pod_container_status_terminated_reason
• kube_pod_init_container_status_terminated_reason
• kube_pod_status_scheduled_time

Previously, some metrics were removed from kube-state-metrics by adding the following --metric-denylist argument to the kube-state-metrics container

--metric-denylist=
kube_.+_created,
kube_.+_metadata_resource_version,
kube_replicaset_metadata_generation,
kube_replicaset_status_observed_generation,
kube_pod_restart_policy,
kube_pod_init_container_status_terminated,
kube_pod_init_container_status_running,
kube_pod_container_status_terminated,
kube_pod_container_status_running,
kube_pod_completion_time,
kube_pod_status_scheduled

--metric-denylist: Comma-separated list of metrics not to be enabled. This list comprises of exact metric names and/or regex patterns. The allowlist and denylist are mutually exclusive.

However, all the list of metrics is managed as RegEx, thus "kube_pod_container_status_terminated" denies .kube_pod_container_status_terminated., that's why kube_pod_init_container_status_terminated_reason is missing

Co-authored-by: Florian Gleizes [email protected]
Signed-off-by: Arunprasad Rajkumar [email protected]

See https://bugzilla.redhat.com/show_bug.cgi?id=2050120 for more info.

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