topologies/available/lf_3n_hsw_testbed2.yaml \
topologies/available/lf_3n_hsw_testbed3.yaml"
TOPOLOGIES_2N_SKX="topologies/available/lf_2n_skx_testbed21.yaml \
topologies/available/lf_3n_hsw_testbed2.yaml \
topologies/available/lf_3n_hsw_testbed3.yaml"
TOPOLOGIES_2N_SKX="topologies/available/lf_2n_skx_testbed21.yaml \