Fixes usage of redfish detach virtual media feature to be conform to
the general implementation.
Before the detach virtual media API call using redfish driver was not
working as intended and caused the operation to fail.
The method implementation was allowing only a single device_type
while it should be multiple devices to match the conductor manager
implementation.
Change-Id: I9edd3b77eeb3ec1b0484d4e6f0c6dea53e83f9ad
(cherry picked from commit 58fc21fc0b0ab7beb5a74654455265b95cc25a28)
d31ea3d051