created variable for user to specify java heap size in picard #2739

Job	Run time
Validate script WDLs using womtools	2m 1s
build and push gatk docker to artifacts	28m 22s
check if the environment has privileges	1s
Validate generated WDLs using womtools	14m 4s
WDL test RUN_CNV_GERMLINE_COHORT_WDL on cromwell	43m 20s
WDL test RUN_CNV_GERMLINE_CASE_WDL on cromwell	51m 37s
WDL test RUN_CNV_SOMATIC_WDL on cromwell	38m 41s
WDL test RUN_M2_WDL on cromwell	27m 29s
WDL test RUN_CNN_WDL on cromwell	26m 16s
WDL test RUN_VCF_SITE_LEVEL_FILTERING_WDL on cromwell	33m 17s
Java 17.0.6+10 build and test cloud	5m 23s
Java 17.0.6+10 build and test integration	51m 11s
Java 17.0.6+10 build and test unit	25m 40s
Java 17.0.6+10 test on docker integration	47m 11s
Java 17.0.6+10 test on docker unit	28m 45s
Java 17.0.6+10 test on docker variantcalling	42m 52s
Java 17.0.6+10 test on docker conda	44m 12s
	8h 30m 22s

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