Add run hostpath to daemonset pods

`/run/mount` need to be share between host and
csi-plugin containers for `/run/mount/utab`

this is required to ensures that the network
is not stopped prior to unmounting the network devices.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

deploy/cephfs/kubernetes/csi-cephfsplugin.yaml

@@ -101,6 +101,8 @@ spec:
               readOnly: true
             - name: host-dev
               mountPath: /dev
+            - name: host-mount
+              mountPath: /run/mount
             - name: ceph-csi-config
               mountPath: /etc/ceph-csi-config/
             - name: keys-tmp-dir
@@ -155,6 +157,9 @@ spec:
         - name: host-dev
           hostPath:
             path: /dev
+        - name: host-mount
+          hostPath:
+            path: /run/mount
         - name: ceph-csi-config
           configMap:
             name: ceph-csi-config

deploy/cephfs/kubernetes/csi-nodeplugin-psp.yaml

@@ -28,6 +28,8 @@ spec:
   allowedHostPaths:
     - pathPrefix: '/dev'
       readOnly: false
+    - pathPrefix: '/run/mount'
+      readOnly: false
     - pathPrefix: '/sys'
       readOnly: false
     - pathPrefix: '/lib/modules'