feat(upgrade): support parallel/faster upgrades for node daemonset

For ZFSPV, all the node daemonset pods can go into the terminating state at
the same time since it does not need any minimum availability of those pods.

Changing maxUnavailable to 100% so that K8s can upgrade all the daemonset
pods parallelly.

Signed-off-by: Pawan <pawan@mayadata.io>

deploy/yamls/zfs-driver.yaml

@@ -501,6 +501,9 @@ apiVersion: apps/v1
 metadata:
   name: openebs-zfs-controller
   namespace: kube-system
+  labels:
+    openebs.io/component-name: openebs-zfs-controller
+    openebs.io/version: ci
 spec:
   selector:
     matchLabels:
@@ -513,6 +516,8 @@ spec:
       labels:
         app: openebs-zfs-controller
         role: openebs-zfs
+        openebs.io/component-name: openebs-zfs-controller
+        openebs.io/version: ci
     spec:
       affinity:
         podAntiAffinity:
@@ -724,15 +729,24 @@ apiVersion: apps/v1
 metadata:
   name: openebs-zfs-node
   namespace: kube-system
+  labels:
+    openebs.io/component-name: openebs-zfs-node
+    openebs.io/version: ci
 spec:
   selector:
     matchLabels:
       app: openebs-zfs-node
+  updateStrategy:
+    rollingUpdate:
+      maxUnavailable: 100%
+    type: RollingUpdate
   template:
     metadata:
       labels:
         app: openebs-zfs-node
         role: openebs-zfs
+        openebs.io/component-name: openebs-zfs-node
+        openebs.io/version: ci
     spec:
       priorityClassName: system-node-critical
       serviceAccount: openebs-zfs-node-sa
@@ -768,8 +782,6 @@ spec:
         - name: openebs-zfs-plugin
           securityContext:
             privileged: true
-            capabilities:
-              add: ["CAP_MKNOD", "CAP_SYS_ADMIN", "SYS_ADMIN"]
             allowPrivilegeEscalation: true
           image: quay.io/openebs/zfs-driver:ci
           imagePullPolicy: IfNotPresent

deploy/zfs-operator.yaml

@@ -1540,6 +1540,9 @@ apiVersion: apps/v1
 metadata:
   name: openebs-zfs-controller
   namespace: kube-system
+  labels:
+    openebs.io/component-name: openebs-zfs-controller
+    openebs.io/version: ci
 spec:
   selector:
     matchLabels:
@@ -1552,6 +1555,8 @@ spec:
       labels:
         app: openebs-zfs-controller
         role: openebs-zfs
+        openebs.io/component-name: openebs-zfs-controller
+        openebs.io/version: ci
     spec:
       affinity:
         podAntiAffinity:
@@ -1763,15 +1768,24 @@ apiVersion: apps/v1
 metadata:
   name: openebs-zfs-node
   namespace: kube-system
+  labels:
+    openebs.io/component-name: openebs-zfs-node
+    openebs.io/version: ci
 spec:
   selector:
     matchLabels:
       app: openebs-zfs-node
+  updateStrategy:
+    rollingUpdate:
+      maxUnavailable: 100%
+    type: RollingUpdate
   template:
     metadata:
       labels:
         app: openebs-zfs-node
         role: openebs-zfs
+        openebs.io/component-name: openebs-zfs-node
+        openebs.io/version: ci
     spec:
       priorityClassName: system-node-critical
       serviceAccount: openebs-zfs-node-sa
@@ -1807,8 +1821,6 @@ spec:
         - name: openebs-zfs-plugin
           securityContext:
             privileged: true
-            capabilities:
-              add: ["CAP_MKNOD", "CAP_SYS_ADMIN", "SYS_ADMIN"]
             allowPrivilegeEscalation: true
           image: quay.io/openebs/zfs-driver:ci
           imagePullPolicy: IfNotPresent