Modifies converse schedeuler to prioritize NodeGroup messages #80

Job	Run time
buildold_netlrts-linux-x86_64	18m 10s
changa_netlrts-linux-x86_64	6m 15s
charm4py_netlrts-linux-x86_64_tcp	7m 4s
cuda_netlrts-linux-x86_64_buildonly	9m 56s
doc	36s
multicore-darwin-x86_64_projections	16m 17s
mpi-linux-x86_64_syncft	12m 39s
mpi-linux-x86_64	1h 10m 8s
netlrts-darwin-x86_64	48m 29s
namd_netlrts-linux-x86_64	9m 26s
netlrts-linux-i386	17m 36s
netlrts-linux-x86_64	15m 53s
netlrts-linux-x86_64_smp	28m 17s
shellcheck	6s
netlrts-linux-x86_64_syncft	11m 14s
spack_ubuntu-latest	34m 0s
netlrts-win-x86_64_mingw64	18m 49s
ucx-linux-x86_64_openpmix	17m 3s
spack_macos-latest	32m 59s
verbs-linux-x86_64_smp	16m 20s
	6h 31m 17s

Provide feedback