Update gempak scripts to be complaint with static bash code analysis checkers#4323

DavidHuber-NOAA merged 7 commits intoNOAA-EMC:developNOAA-EMC/global-workflow:developfrom

WalterKolczynski-NOAA:feature/shfmt_gempakWalterKolczynski-NOAA/global-workflow:feature/shfmt_gempakCopy head branch name to clipboard