Describes virtual media based L3/DHCP-less ramdisk booting in the
`redfish` hardware type documentation.
Added warning to the deploy-ramdisk docs since the images
we publish will not work.
Co-Authored: Iury Gregory Melo Ferreira <iurygregory@gmail.com>
Change-Id: If9ead46db30ce519f128550f1071a1f01f7a5ccf
Story: 2006691
Task: 37073