PR #2075 added _cluster.cluster-domain references to monitoring-agents
values.yaml for FQDN resolution. This broke fluent-bit because it is
a subchart where _cluster values are not accessible (only global
values are shared with subcharts), causing "index of untyped nil".
Revert values.yaml to short DNS names (.svc) for the management
cluster where they resolve locally, and add FQDN with cluster-domain
suffix in the tenant kubernetes HelmRelease where _cluster values are
available and cross-cluster DNS resolution is needed.
Closes#2084
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>