add possibility to add custom configs before pre-defined configuration

Author: kofemann

templates/configmap.yaml

@@ -4,6 +4,10 @@ metadata:
   name: {{ .Release.Name }}-configmap
 data:
   dcache-k8s-door: |-
+
+    # Extra user configuration
+{{ .Values.dcache.layoutExtraPre | indent 4 }}
+
 {{ if .Values.dcache.door.enabled }}
     [door-svc]
     dcache.broker.scheme = core
@@ -163,6 +167,9 @@ data:
 {{ .Values.dcache.layoutExtra | indent 4 }}
 
   dcache.conf: |-
+    # Extra user configuration
+{{ .Values.dcache.configExtraPre  | indent 4 }}
+
 {{- if .Values.services.srm.enabled }}
     dcache.enable.space-reservation = true
     spacemanager.enable.unreserved-uploads-to-linkgroups = true

values.yaml

@@ -21,10 +21,19 @@ dcache:
     - a
     - b
     - c
-  # extra configuration for dcache.conf
+  # extra configuration for dcache.conf, placed before the standard configuration
+  configExtraPre: |
+    # custom configuration before other settings
+
+  # extra configuration for dcache.conf, placed after the standard configuration
   configExtra: |
 
-  # extra configuration for layout.conf
+
+  # extra configuration for layout.conf, placed before the standard layout
+  layoutExtraPre: |
+    # custom configuration before other settings
+
+  # extra configuration for layout.conf, placed after the standard layout
   layoutExtra: |