This patch enables virtual media deploy even if the expected virtual
floppy device name "/dev/disk/by-label/ir-vfd-dev" is capitalized to
"/dev/disk/by-label/IR-VFD-DEV".
This change is necessary because some bare metal hardware such as
FUJITSU RX1330 series create the capitalized virtual floppy device
name.
Change-Id: I436b3f9524a83814e082f8dd421df3e53b33f792
Closes-Bug: #1541167