Initial patch for I78d7bcf214a45245e2073428120fcbdd968e1acd
works without the envvar set, however, 'set -eu' causes it to break
if unset.
This makes the module configuration variable not required to be
set, consistent with other DIB scripts.
Change-Id: I5ca80f518d0371a18c107c061dc923876463af57
Signed-off-by: Lon Hohberger <lhh@redhat.com>