* update test data paths
* Update test md5sums
* gatk test fixes & update variantfiltration main
* few extra fixes after review
* fix suspected format error
* Update software/gatk4/variantfiltration/main.nf
* Update software/gatk4/variantfiltration/main.nf
* Apply suggestions from code review
Co-authored-by: Harshil Patel <drpatelh@users.noreply.github.com>