renamed some options as this is using bcftools, updated default control_metadata_key to the irods key; removed debugging print lines; removed max count on output files, since could be working on more than 1 input VCF
renamed some options as this is using bcftools, updated default control_metadata_key to the irods key; removed debugging print lines; removed max count on output files, since could be working on more than 1 input VCF

wtsi-hgi/vr-pipe,wtsi-hgi/vr-pipe