add gromacs - yml and installGROMACS#9

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vickytsang wants to merge 3 commits intorocmsys:masterfrom

vickytsang:master

Commits on Nov 27, 2019

add gromacs - yml and installGROMACS
vickytsang
committed

Commits on Nov 28, 2019

changed github to gitlab. fixed install dir. removed rhel paths
vickytsang
committed

Commits on Dec 3, 2019

Register GROMACS installation routine
domcharrier
authored