fix(provisioning): register topologyKeys from driver env (#395)

Signed-off-by: shubham <shubham14bajpai@gmail.com>

deploy/zfs-operator.yaml

@@ -2020,6 +2020,7 @@ globalDefault: false
 description: "This priority class should be used for the OpenEBS ZFS localPV CSI driver controller deployment only."
 
 ---
+
 kind: StatefulSet
 apiVersion: apps/v1
 metadata:
@@ -2346,6 +2347,12 @@ spec:
               value: agent
             - name: OPENEBS_NAMESPACE
               value: openebs
+            - name: ALLOWED_TOPOLOGIES
+              # The desired comma separated keys can be added here,
+              # by default all the node label keys are allowed.
+              # For example:
+              # value: "kubernetes.io/hostname,openebs.io/rack"
+              value: "All"
           volumeMounts:
             - name: plugin-dir
               mountPath: /plugin