CNINode resources' name should refect to node's instance ID

[haouc]

What would you like to be enhanced:
Currently the CNINode resources' name are node hostname which is likely reused by EC2. To be more resilient, using instance ID should be a better way to prevent collision.

Why is the change needed and what use case will it solve:
Hypothetically, if the resources were leaked, the name collision would cause breaking behavior on this controller.