Add check for node status to onos.py startup
Add check for node status to onos.py startup

Change-Id: I8e6b103ef46a5bc5877507a7adef3eb6117adf64

y-higuchi/onos,sdnwiselab/onos,oplinkoms/onos,sdnwiselab/onos,sdnwiselab/onos,osinstom/onos,opennetworkinglab/onos,LorenzReinhart/ONOSnew,sdnwiselab/onos,kuujo/onos,LorenzReinhart/ONOSnew,sdnwiselab/onos,kuujo/onos,y-higuchi/onos,gkatsikas/onos,gkatsikas/onos,oplinkoms/onos,oplinkoms/onos,y-higuchi/onos,osinstom/onos,opennetworkinglab/onos,donNewtonAlpha/onos,kuujo/onos,gkatsikas/onos,LorenzReinhart/ONOSnew,gkatsikas/onos,kuujo/onos,donNewtonAlpha/onos,gkatsikas/onos,opennetworkinglab/onos,gkatsikas/onos,kuujo/onos,osinstom/onos,oplinkoms/onos,osinstom/onos,donNewtonAlpha/onos,kuujo/onos,kuujo/onos,donNewtonAlpha/onos,opennetworkinglab/onos,LorenzReinhart/ONOSnew,oplinkoms/onos,y-higuchi/onos,oplinkoms/onos,osinstom/onos,opennetworkinglab/onos,opennetworkinglab/onos,y-higuchi/onos,donNewtonAlpha/onos,LorenzReinhart/ONOSnew,sdnwiselab/onos,oplinkoms/onos