Update helm chart for running as deployment

[praxist]

Builds off of #572 to also add the deployment to helm.

helm template yields the following with kind: Deployment:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: RELEASE-NAME-descheduler
  labels:
    app.kubernetes.io/name: descheduler
    helm.sh/chart: descheduler-0.20.0
    app.kubernetes.io/instance: RELEASE-NAME
    app.kubernetes.io/version: "0.20.0"
    app.kubernetes.io/managed-by: Tiller
spec:
  replicas: 1
  selector:
    matchLabels:
      app.kubernetes.io/name: descheduler
      app.kubernetes.io/instance: RELEASE-NAME
  template:
    metadata:
      labels:
        app.kubernetes.io/name: descheduler
        app.kubernetes.io/instance: RELEASE-NAME
      annotations:
        checksum/config: 9fe081cdd7d5c040105f0b817cfded705b3a18c3e4258d0afef86ec00f1cf9ee
    spec:
      priorityClassName: system-cluster-critical
      serviceAccountName: RELEASE-NAME-descheduler
      containers:
        - name: descheduler
          image: "k8s.gcr.io/descheduler/descheduler:v0.20.0"
          imagePullPolicy: IfNotPresent
          command:
            - "/bin/descheduler"
          args:
            - "--policy-config-file"
            - "/policy-dir/policy.yaml"
            - "--descheduling-interval"
            - 5m
            - "--v"
            - "3"
          ports:
            - containerPort: 10258
              protocol: TCP
          resources:
            requests:
              cpu: 500m
              memory: 256Mi

          securityContext:
            allowPrivilegeEscalation: false
            capabilities:
              drop:
                - ALL
            privileged: false
            readOnlyRootFilesystem: true
            runAsNonRoot: true
            # Required until 0.21.0 image is released
            # https://github.com/kubernetes-sigs/descheduler/issues/466
            runAsUser: 1000
          volumeMounts:
            - mountPath: /policy-dir
              name: policy-volume
      volumes:
        - name: policy-volume
          configMap:
            name: RELEASE-NAME-descheduler

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[k8s-ci-robot]

Hi @praxist. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[praxist]

I signed it

[damemi]

/ok-to-test

[damemi]

Sorry, this will need a rebase

[praxist]

@damemi should be ready for re-review now

[cnmcavoy]

I think this is supposed to be nindent 8. (see the indent level for labels above)

[praxist]

good catch - done

[a7i]

/retest

[a7i]

Would be great to include tolerations similar to the one in CronJob #562

[praxist]

added

[damemi]

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: damemi, praxist

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[damemi]

/hold
@praxist could you squash to 1 commit please?

[praxist]

@damemi rebased + squashed

[damemi]

/hold cancel
/lgtm