Modifies converse schedeuler to prioritize NodeGroup messages #108

Job	Run time
charm4py_netlrts-linux-x86_64_tcp	7m 13s
cuda_netlrts-linux-x86_64_buildonly	11m 32s
changa_netlrts-linux-x86_64	6m 40s
doc	41s
mpi-linux-x86_64	57m 32s
buildold_netlrts-linux-x86_64	18m 34s
mpi-linux-x86_64_syncft	12m 42s
multicore-darwin-x86_64_projections	26m 36s
namd_netlrts-linux-x86_64	9m 18s
netlrts-darwin-x86_64	37m 19s
netlrts-linux-i386	18m 6s
netlrts-linux-x86_64	16m 26s
netlrts-linux-x86_64_smp	25m 48s
netlrts-linux-x86_64_syncft	11m 48s
shellcheck	6s
netlrts-win-x86_64_mingw64	17m 58s
spack_ubuntu-latest	33m 59s
spack_macos-12	38m 25s
ucx-linux-x86_64_openpmix	17m 28s
verbs-linux-x86_64_smp	16m 23s
	6h 24m 34s

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