Support c4 images for running on AWS
Support c4 images for running on AWS

guillermo-carrasco/bcbio-nextgen-vm,alexandrucoman/bcbio-nextgen-vm,brainstorm/bcbio-nextgen-vm,brainstorm/bcbio-nextgen-vm,guillermo-carrasco/bcbio-nextgen-vm,chapmanb/bcbio-nextgen-vm,fw1121/bcbio-nextgen-vm,alexandrucoman/bcbio-nextgen-vm,fw1121/bcbio-nextgen-vm,chapmanb/bcbio-nextgen-vm