Upgrade Snapshot controller installed for all supported Kubernetes
versions to v7.0.2. Also update the manifests used to deploy the
Snapshot controller.

* Parameterized snaphot controller namespaces

* add ns yml

* add docs

* namespace

Add snapshot-controller for CSI drivers and snapshot CRDs, add a default volumesnapshotclass when running cinder CSI (#6537)

* add snapshot-controller and v1beta1 snapshot api

* fix typo

* udpate manifest to v1beta1

* update

* update manifests

* fix spelling

* wait until crd is applied

* fix missing info in kube module

* revert snapshotclass

* add snapshot crds before applying the csi driver

* add crds, missed them in last commit

* use pull policy from kubespray