This patch updates the Kubernetes version to 1.27.4 and also adjust the
install script to do an automated cleanup of the other copr repositories
ensuring consistent results and reduce interference.

Especially with the recent insights into Grafanas telemetry
infrastructure, time to drop the remainings of loki

chore(deps): update docker.io/library/alpine docker tag to v3.18.2

See merge request !671

this fix is probably necvessary, because some pods fail during the
migration to 1.5.0