Use controller to reconcile k8s secrets

[aramase]

What this PR does / why we need it:

• Adds a new custom resource SecretProviderClassPodStatus to track the status of the mount for the pod
  • The SecretProviderClassPodStatus is created with the pod as ownerReference

apiVersion: secrets-store.csi.x-k8s.io/v1alpha1
kind: SecretProviderClassPodStatus
metadata:
 creationTimestamp: "2020-06-02T00:12:38Z"
 generation: 1
 labels:
   internal.secrets-store.csi.k8s.io/node-name: kind-worker
 name: nginx-secrets-store-inline-0-default-azure
 namespace: default
 ownerReferences:
 - apiVersion: v1
   kind: Pod
   name: nginx-secrets-store-inline-0
   uid: d8771ddf-935a-4199-a20b-f35f71c1d9e7
 resourceVersion: "107107"
 selfLink: /apis/secrets-store.csi.x-k8s.io/v1alpha1/namespaces/default/secretproviderclasspodstatuses/nginx-secrets-store-inline-0-default-azure
 uid: 72a0ecb8-c6e5-41e1-8da1-25e37ec61b26
status:
 mounted: true
 podName: nginx-secrets-store-inline-0
 secretProviderClassName: azure
 targetPath: /var/lib/kubelet/pods/d8771ddf-935a-4199-a20b-f35f71c1d9e7/volumes/kubernetes.io~csi/secrets-store-inline/mount

• The secret is created and contains the SecretProviderClass as ownerReference.
• Removes support for provider parameters in pod spec (ref: Remove support for setting provider parameters in pod spec #204)

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #188

Special notes for your reviewer:
Design doc: https://docs.google.com/document/d/1EM0Lf-qSdUXdfjOx3AZB9yHOr-lw9_CtoUhR0eTmIwo/edit?usp=sharing

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This pull-request has been approved by: aramase

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[aramase]

/test pull-secrets-store-csi-driver-e2e-windows

[ritazh]

If we want to skip these tests, should we just remove them? Then in a separate PR, remove all references of provider parameters from pod spec. WDYT?

[aramase]

Makes sense! Removed it.

[aramase]

/wip
/test pull-secrets-store-csi-driver-e2e-windows

[ritazh]

/lgtm