Implement helm-toolkit snippet to armada test pods/containers

This updates the armada 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: Ie19852e6a87c15a93caca8915ba92d51c47ec04b

charts/armada/templates/tests/test-armada-api.yaml

@@ -30,6 +30,7 @@ metadata:
   labels:
 {{ tuple $envAll "armada" "api-test" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
 spec:
+{{ dict "envAll" $envAll "application" "api_test" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 2 }}
   restartPolicy: Never
   nodeSelector:
     {{ .Values.labels.test.node_selector_key }}: {{ .Values.labels.test.node_selector_value }}
@@ -41,6 +42,7 @@ spec:
       image: {{ .Values.images.tags.api }}
       imagePullPolicy: {{ .Values.images.pull_policy }}
 {{ tuple . .Values.pod.resources.test.api | include "helm-toolkit.snippets.kubernetes_resources" | indent 6 }}
+{{ dict "envAll" $envAll "application" "api_test" "container" "armada_api_test" | include "helm-toolkit.snippets.kubernetes_container_security_context" | indent 6 }}
       command: ["/bin/bash", "-c", "curl -v -X GET --fail ${ARMADA_URL}/api/v1.0/health; exit $?"]
 ...
 {{- end }}

charts/armada/values.yaml

@@ -279,6 +279,13 @@ pod:
           runAsUser: 65534
           readOnlyRootFilesystem: true
           allowPrivilegeEscalation: false
+    api_test:
+      pod:
+        runAsUser: 1000
+      container:
+        armada_api_test:
+          readOnlyRootFilesystem: true
+          allowPrivilegeEscalation: false
   env:
     # NOTE(@drewwalters96): These configuration values change the Armada API's
     #    uWSGI configuration.