Add missing security context to Keystone pods/containers

This updates the Keystone chart to include the pod
security context on the pod template.

This also adds the container security context to set
readOnlyRootFilesystem flag to true.

Change-Id: I2ac3a4efa6798e263de19f0db444f37c5236d121

keystone/templates/job-credential-setup.yaml

@@ -67,6 +67,7 @@ spec:
 {{ dict "envAll" $envAll "podName" "keystone-credential-setup" "containerNames" (list "keystone-credential-setup") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
     spec:
       serviceAccountName: {{ $serviceAccountName }}
+{{ dict "envAll" $envAll "application" "credential_setup" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       initContainers:
 {{ tuple $envAll "credential_setup" $mounts_keystone_credential_setup_init | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
       restartPolicy: OnFailure
@@ -76,6 +77,7 @@ spec:
         - name: keystone-credential-setup
 {{ tuple $envAll "keystone_credential_setup" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.jobs.credential_setup | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+{{ dict "envAll" $envAll "application" "credential_setup" "container" "keystone_credential_setup" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
           env:
             - name: KEYSTONE_USER
               value: {{ .Values.jobs.credential_setup.user | quote }}

keystone/templates/job-domain-manage.yaml

@@ -37,6 +37,7 @@ spec:
 {{ dict "envAll" $envAll "podName" "keystone-domain-manage" "containerNames" (list "keystone-domain-manage" "keystone-domain-manage-init") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
     spec:
       serviceAccountName: {{ $serviceAccountName }}
+{{ dict "envAll" $envAll "application" "domain_manage" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       restartPolicy: OnFailure
       nodeSelector:
         {{ .Values.labels.job.node_selector_key }}: {{ .Values.labels.job.node_selector_value }}
@@ -62,6 +63,7 @@ spec:
         - name: keystone-domain-manage
 {{ tuple $envAll "keystone_domain_manage" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.jobs.domain_manage | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+{{ dict "envAll" $envAll "application" "domain_manage" "container" "keystone_domain_manage" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
           env:
 {{- with $env := dict "ksUserSecret" .Values.secrets.identity.admin }}
 {{- include "helm-toolkit.snippets.keystone_openrc_env_vars" $env | indent 12 }}

keystone/templates/job-fernet-setup.yaml

@@ -66,6 +66,7 @@ spec:
 {{ dict "envAll" $envAll "podName" "keystone-fernet-setup" "containerNames" (list "keystone-fernet-setup") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 8 }}
     spec:
       serviceAccountName: {{ $serviceAccountName }}
+{{ dict "envAll" $envAll "application" "fernet_setup" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 6 }}
       initContainers:
 {{ tuple $envAll "fernet_setup" $mounts_keystone_fernet_setup_init | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 8 }}
       restartPolicy: OnFailure
@@ -75,6 +76,7 @@ spec:
         - name: keystone-fernet-setup
 {{ tuple $envAll "keystone_fernet_setup" | include "helm-toolkit.snippets.image" | indent 10 }}
 {{ tuple $envAll $envAll.Values.pod.resources.jobs.fernet_setup | include "helm-toolkit.snippets.kubernetes_resources" | indent 10 }}
+{{ dict "envAll" $envAll "application" "fernet_setup" "container" "keystone_fernet_setup" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 10 }}
           env:
             - name: KEYSTONE_USER
               value: {{ .Values.jobs.fernet_setup.user | quote }}

keystone/values.yaml

@@ -172,6 +172,27 @@ pod:
         keystone_api:
           readOnlyRootFilesystem: true
           allowPrivilegeEscalation: false
+    credential_setup:
+      pod:
+        runAsUser: 42424
+      container:
+        keystone_credential_setup:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
+    fernet_setup:
+      pod:
+        runAsUser: 42424
+      container:
+        keystone_fernet_setup:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
+    domain_manage:
+      pod:
+        runAsUser: 42424
+      container:
+        keystone_domain_manage:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
   affinity:
     anti:
       type: