Allow to specify system volume type when node is created [WAL-2815]
Allow to specify system volume type when node is created [WAL-2815]

opennode/nodeconductor-assembly-waldur,opennode/waldur-mastermind,opennode/nodeconductor-assembly-waldur,opennode/nodeconductor-assembly-waldur,opennode/waldur-mastermind,opennode/waldur-mastermind,opennode/waldur-mastermind