Fix a bug in the node controller that wouldn't update the last heard time properly, which meant the health check was failing.
Fix a bug in the node controller that wouldn't update the last heard time properly, which meant the health check was failing.

kaze/paasmaker,kaze/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,kaze/paasmaker,kaze/paasmaker,paasmaker/paasmaker,paasmaker/paasmaker,kaze/paasmaker