EG-MON-4: Infrastructure Device Performance Test

This test verifies that the rack head node performs well enough to run all the services it needs to run.
Procedure

While experiments involving FOAM-controlled OpenFlow slivers and compute slivers are running:

    View OpenFlow control monitoring at GMOC and verify that no monitoring data is missing
    View VLAN 1750 data plane monitoring, which pings the rack's interface on VLAN 1750, and verify that packets are not being dropped
    Verify that the CPU idle percentage on the head node is nonzero.