Make the testsuite somewhat less intolerably slow by only swapping and terminating experiments that are not already swapped out.
Make the testsuite somewhat less intolerably slow by only swapping and
terminating experiments that are not already swapped out.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome