Add checksum check on Munge download #823

Job	Run time
DepCheck	21s
ruby (ubuntu-latest, Setup Ruby)	49s
python (ubuntu-latest, Python 3.7 Tests)	17s
ChefSpec (cookbooks/aws-parallelcluster-awsbatch)	57s
python (ubuntu-latest, Python 3.8 Tests)	17s
Shellcheck	7s
ChefSpec (cookbooks/aws-parallelcluster-computefleet)	2m 1s
python (ubuntu-latest, Python 3.9 Tests)	32s
ChefSpec (cookbooks/aws-parallelcluster-environment)	2m 57s
python (ubuntu-latest, Python 3.10 Tests)	19s
ChefSpec (cookbooks/aws-parallelcluster-platform)	1m 42s
python (ubuntu-latest, Python 3.10 Tests Coverage)	25s
ChefSpec (cookbooks/aws-parallelcluster-shared)	1m 23s
python (ubuntu-latest, Code Checks)	50s
ChefSpec (cookbooks/aws-parallelcluster-slurm)	1m 12s
	14m 9s

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