Add support for block volumes (#6680)

Signed-off-by: David Zaninovic <dzaninovic@catalogicsoftware.com>

tilt-resources/examples/node-agent.yaml

@@ -49,6 +49,9 @@ spec:
             - mountPath: /host_pods
               mountPropagation: HostToContainer
               name: host-pods
+            - mountPath: /var/lib/kubelet/plugins
+              mountPropagation: HostToContainer
+              name: host-plugins              
             - mountPath: /scratch
               name: scratch
             - mountPath: /credentials
@@ -60,6 +63,9 @@ spec:
         - hostPath:
             path: /var/lib/kubelet/pods
           name: host-pods
+        - hostPath:
+            path: /var/lib/kubelet/plugins
+          name: host-plugins          
         - emptyDir: {}
           name: scratch
         - name: cloud-credentials