REX-Ray Config StorageDrivers Backwards Compat
REX-Ray Config StorageDrivers Backwards Compat

This patch should provide backwards compatibility with the old property
`rexray.storageDrivers`. If this property is set, its first element will
be assigned to the property `libstorage.service` if that property is
undefined. This is regarding issue #471.

codedellemc/rexray,thecodeteam/rexray,oppodeldoc/rexray,emccode/rexray,thecodeteam/rexray,codedellemc/rexray,oppodeldoc/rexray,thecodeteam/rexray,akutz/rexray,thecodeteam/rexray,cduchesne/rexray,oppodeldoc/rexray,akutz/rexray,emccode/rexray,codedellemc/rexray,thecodeteam/rexray,codedellemc/rexray,cduchesne/rexray,codedellemc/rexray,cduchesne/rexray,oppodeldoc/rexray,thecodeteam/rexray,akutz/rexray,emccode/rexray,cduchesne/rexray,akutz/rexray,akutz/rexray,akutz/rexray,oppodeldoc/rexray,codedellemc/rexray,emccode/rexray,cduchesne/rexray,cduchesne/rexray,oppodeldoc/rexray