[stable/2024.1] Add optional kubeconfig path to roles (#1919)

This is an automated cherry-pick of #1871
/assign mnaser
diff --git a/roles/loki/defaults/main.yml b/roles/loki/defaults/main.yml
index 196238b..3c02c30 100644
--- a/roles/loki/defaults/main.yml
+++ b/roles/loki/defaults/main.yml
@@ -17,4 +17,5 @@
 loki_helm_chart_ref: /usr/local/src/loki
 
 loki_helm_release_namespace: monitoring
+loki_helm_kubeconfig: "{{ kubeconfig_path | default('/etc/kubernetes/admin.conf') }}"
 loki_helm_values: {}