Reset nfds every iteration
Reset nfds every iteration

Change-Id: I2890138f4853dc24b85a3fb69e3033bf5482d311

cloudfoundry-incubator/garden-linux,shashidharatd/garden-linux,cloudfoundry-incubator/garden,tangfeixiong/garden,shashidharatd/garden-linux,savaki/garden,shashidharatd/garden-linux,shashidharatd/garden-linux,cloudfoundry-incubator/garden-linux,cloudfoundry-incubator/garden,tsaleh/garden,savaki/garden,cloudfoundry-incubator/garden-linux,tsaleh/garden,tangfeixiong/garden