The node provision API rejects ``disable_ramdisk`` for servicing
requests, even though the servicing backend supports skipping the
ramdisk for steps marked as not requiring it and the client-side
interface exposes the option.
This change adds a new microversion to allow ``disable_ramdisk``
with ``target=service``.
Closes-Bug: #2137065
Change-Id: I7e41ec27ac2cfc0255732bd14cad624ea612bd65
Signed-off-by: Afonne-CID <afonnepaulc@gmail.com>
23948dabf1