[Modules] Recursive shell calls with Grid Engine and v5.x+

[Scott H. <sha...@nd...>]

We're currently running Modules 4.x because on any 5.x version we try, jobs
submitted to Grid Engine (GE) cause a recursive bash loop:

/bin/bash: warning: shell level (1000) too high, resetting to 1

Eventually, GE gives up and puts the node in an error state, but it also
reschedules the job such that if left unchecked, our entire cluster ends up
disabled.

I feel like this is a GE issue or likely something specific to our site
setup, but since we haven't had any luck figuring it out I thought I would
ask here to see if anyone might have any ideas.