refact(operator): update zfs operator with custom priorityclass (#367)

Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>

deploy/zfs-operator.yaml

@@ -2004,6 +2004,19 @@ roleRef:
   name: openebs-zfs-provisioner-role
   apiGroup: rbac.authorization.k8s.io
 
+---
+
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: openebs-zfs-csi-controller-critical
+# A PriorityClass object can have any 32-bit integer value smaller than or equal
+# to 1 billion. Larger numbers are reserved for critical system Pods that should
+# not normally be preempted or evicted. The higher the value, the higher the priority.
+value: 900000000
+globalDefault: false
+description: "This priority class should be used for the OpenEBS ZFS localPV CSI driver controller deployment only."
+
 ---
 kind: StatefulSet
 apiVersion: apps/v1
@@ -2038,7 +2051,7 @@ spec:
                 values:
                 - openebs-zfs-controller
             topologyKey: "kubernetes.io/hostname"
-      priorityClassName: system-cluster-critical
+      priorityClassName: openebs-zfs-csi-controller-critical
       serviceAccount: openebs-zfs-controller-sa
       containers:
         - name: csi-resizer
@@ -2233,6 +2246,19 @@ data:
 
 ---
 
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: openebs-zfs-csi-node-critical
+# A PriorityClass object can have any 32-bit integer value smaller than or equal
+# to 1 billion. Larger numbers are reserved for critical system Pods that should
+# not normally be preempted or evicted. The higher the value, the higher the priority.
+value: 900001000
+globalDefault: false
+description: "This priority class should be used for the OpenEBS ZFS localPV CSI driver node deployment only."
+
+---
+
 kind: DaemonSet
 apiVersion: apps/v1
 metadata:
@@ -2257,7 +2283,7 @@ spec:
         openebs.io/component-name: openebs-zfs-node
         openebs.io/version: ci
     spec:
-      priorityClassName: system-node-critical
+      priorityClassName: openebs-zfs-csi-node-critical
       serviceAccount: openebs-zfs-node-sa
       hostNetwork: true
       containers: