Adding support for extraManifests for the chart

Author: JunaidChaudry

Diff for: jupyterhub/templates/extraManifests.yaml

@@ -0,0 +1,4 @@
+{{ range .Values.extraObjects }}
+---
+{{ tpl (toYaml .) $ }}
+{{ end }}

Diff for: jupyterhub/values.schema.yaml

@@ -2925,3 +2925,8 @@ properties:
           A flag that should only be set to true temporarily when experiencing a
           deprecation message that contain censored content that you wish to
           reveal.
+
+  extraManifests: 
+    type: array
+    description: |
+      Any additional K8s manifests to deploy with the chart

Diff for: jupyterhub/values.yaml

@@ -659,3 +659,26 @@ debug:
 
 global:
   safeToShowValues: false
+
+# -- Array of extra K8s manifests to deploy
+extraObjects: []
+  # example: 
+    # - apiVersion: secrets-store.csi.x-k8s.io/v1
+    #   kind: SecretProviderClass
+    #   metadata:
+    #     name: singleuser-hub-secrets-store
+    #   spec:
+    #     provider: aws
+    #     parameters:
+    #       objects: |
+    #         - objectName: "singleuser-secret"
+    #           objectType: "secretsmanager"
+    #           jmesPath:
+    #               - path: "somevar"
+    #                 objectAlias: "somevalue"
+    #     secretObjects:
+    #     - data:
+    #       - key: somevalue
+    #         objectName: somevalue
+    #       secretName: singleuser-secret
+    #       type: Opaque