cromwell requires gnu find

[karl616]

Hi,
cromwell requires findutils rather than the busybox version

bioconda-recipes/recipes/cromwell/meta.yaml

Lines 21 to 23 in a2414a1

	run:
	- openjdk >=8
	- python

some of the implementations of wdl functionality requires the find -empty flag. In a normal conda installation this isn't a problem as you can fall back on the host version of find, but it fails when converted to a biocontainer.

I'm trying to add findutils to conda-forge for this reason:
conda-forge/staged-recipes#6414