Update: defaults

defaults

@@ -21,7 +21,7 @@
   "tnseq_pon": "",
   "tnscope_pon": "",
   "disk_size": "200",
-  "cluster_config": "OnDemand bcs.a2.7xlarge img-ubuntu-vpc",
+  "cluster_config": "OnDemand bcs.a2.3xlarge img-ubuntu-vpc",
   "haplotyper": false,
   "tnseq": false,
   "tnscope": false,