* add gatk4/combinegvcfs module
* update gatk4/combinegvcfs
* loop to create a string adding -V to each vcf file
* add contains for variable md5
* rm whitespace
* meta in output
* fix indentations
* fix indentations
* move tmpdir to args and update conda version
Co-authored-by: Peri <rrx8@cdc.gov>
Co-authored-by: Maxime U. Garcia <max.u.garcia@gmail.com>