let icel stack creation and cluster startup happen independently
let icel stack creation and cluster startup happen independently

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