limiting gradle memory usage on circle ci
limiting gradle memory usage on circle ci

magicDGS/gatk,broadinstitute/hellbender,davidadamsphd/hellbender,ksthesis/gatk,magicDGS/gatk,ksthesis/gatk,frank-y-liu/gatk,magicDGS/gatk,broadinstitute/gatk-dataflow,frank-y-liu/gatk,frank-y-liu/gatk,magicDGS/gatk,broadinstitute/hellbender,davidadamsphd/hellbender,ksthesis/gatk,broadinstitute/gatk-dataflow,magicDGS/gatk,frank-y-liu/gatk,ksthesis/gatk,broadinstitute/hellbender,broadinstitute/hellbender,ksthesis/gatk,frank-y-liu/gatk,ksthesis/gatk,frank-y-liu/gatk,broadinstitute/hellbender,magicDGS/gatk,davidadamsphd/hellbender,broadinstitute/hellbender