Modifies converse schedeuler to prioritize NodeGroup messages #105

Job	Run time
buildold_netlrts-linux-x86_64	18m 21s
changa_netlrts-linux-x86_64	6m 41s
charm4py_netlrts-linux-x86_64_tcp	7m 25s
cuda_netlrts-linux-x86_64_buildonly	12m 3s
doc	43s
mpi-linux-x86_64	1h 7m 31s
mpi-linux-x86_64_syncft	14m 10s
multicore-darwin-x86_64_projections	16m 15s
namd_netlrts-linux-x86_64	9m 5s
netlrts-darwin-x86_64	26m 13s
netlrts-linux-i386	18m 1s
netlrts-linux-x86_64	15m 55s
netlrts-linux-x86_64_smp	25m 30s
netlrts-linux-x86_64_syncft	11m 33s
netlrts-win-x86_64_mingw64	19m 26s
shellcheck	5s
spack_ubuntu-latest	34m 15s
ucx-linux-x86_64_openpmix	17m 55s
spack_macos-12	1h 4m 44s
verbs-linux-x86_64_smp	16m 54s
	6h 42m 45s

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