Handle the case where ONOS_APPS is not defined - needed for Jenkins
Handle the case where ONOS_APPS is not defined - needed for Jenkins

Change-Id: I66b08f25ebc9171653ae673ea5c562ecb53bcf8c

oplinkoms/onos,oplinkoms/onos,gkatsikas/onos,gkatsikas/onos,opennetworkinglab/onos,opennetworkinglab/onos,opennetworkinglab/onos,gkatsikas/onos,opennetworkinglab/onos,gkatsikas/onos,oplinkoms/onos,gkatsikas/onos,gkatsikas/onos,opennetworkinglab/onos,oplinkoms/onos,oplinkoms/onos,opennetworkinglab/onos,oplinkoms/onos,oplinkoms/onos