Ranger: Add pod/container security context

This updates the Ranger chart to include the pod
security context on the pod template

when I set to true It is going into crashloopbackoff

Change-Id: I00304483de5109e75860bde826ed18370610e286

ranger/templates/deployment-ranger-services.yaml

@@ -40,6 +40,7 @@ spec:
         configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
         configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
     spec:
+{{ dict "envAll" $envAll "application" "ranger" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       serviceAccountName: {{ $serviceAccountName }}
       dnsPolicy: ClusterFirstWithHostNet
       hostNetwork: true
@@ -55,8 +56,7 @@ spec:
           image: {{ .Values.images.tags.ranger }}
           imagePullPolicy: {{ .Values.images.pull_policy }}
 {{ tuple $envAll $envAll.Values.pod.resources.ranger | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
-          securityContext:
+{{ dict "envAll" $envAll "application" "ranger" "container" "ranger_services" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
-            runAsUser: {{ .Values.pod.user.ranger.uid }}
           env:
             - name: USER
               valueFrom:

ranger/values.yaml

@@ -75,9 +75,14 @@ dependencies:
           endpoint: internal
 
 pod:
-  user:
+  security_context:
     ranger:
-      uid: 1000
+      pod:
+        runAsUser: 1000
+      container:
+        ranger_services:
+          readOnlyRootFilesystem: false
+          allowPrivilegeEscalation: false
   affinity:
     anti:
       type: