add cdms helm files

cdms_helm/config_jupyterhub_cdms_helm.yaml

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+jupyterhub:
+   prePuller:
+     hook:
+        enabled: false
+
+   hub:
+     db:
+      type: sqlite-pvc
+      pvc:
+        accessModes:
+         - ReadWriteOnce
+        storage: 1Gi
+        storageClassName: standard
+
+   singleuser:
+     # very small limits for testing on small instances
+     memory:
+      guarantee: 500M
+      limit: 1G
+     cpu:
+      guarantee: "0.3"
+      limit: "1"
+     storage:
+      type: dynamic
+      capacity: 1Gi
+      dynamic:
+        storageClass: standard
+     image:
+      name: zonca/pangeo_notebook_rsignell
+      tag: latest
+     defaultUrl: "/lab"
+     cmd: jupyter-labhub
+     serviceAccountName: daskkubernetes
+
+   # from secrets.yaml
+
+   hub:
+     cookieSecret: ""
+
+   proxy:
+     secretToken: ""
+
+   ingress:
+     enabled: true
+     hosts:
+      - js-XXX-YYY.jetstream-cloud.org
+

cdms_helm/install_pangeo.sh

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+RELEASE=cdms
+NAMESPACE=cdms
+
+helm upgrade --install $RELEASE cdms/cdms \
+    --version "v0.1.1-86665a6" \
+    --namespace $NAMESPACE \
+    --values config_jupyterhub_cdms_helm.yaml

cdms_helm/worker_template.yaml

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+metadata:
+spec:
+  restartPolicy: Never
+  containers:
+  - args:
+      - dask-worker
+      - --nthreads
+      - '2'
+      - --no-bokeh
+      - --memory-limit
+      - 300MB
+      - --death-timeout
+      - '60'
+    image: zonca/pangeo_notebook_rsignell:latest
+    name: dask-worker
+    securityContext:
+      capabilities:
+        add: [SYS_ADMIN]
+      privileged: true
+
+    resources:
+      limits:
+        cpu: ".1"
+        memory: 300M
+      requests:
+        cpu: ".1"
+        memory: 300M