Merge branch 'promtail-ips' into 'master'

Conditional fix for standalone promtail

Closes #1450

See merge request !2527

chart/templates/logging/loki/imagepullsecret.yaml

-{{- if .Values.loki.enabled }}
+{{- if or .Values.loki.enabled .Values.promtail.enabled }}
 {{- if ( include "imagePullSecret" . ) }}
 apiVersion: v1
 kind: Secret