Accept and apply intel driver ver parameter to pxeboot conf file
for nodes to be installed (include reinstall and upgrade).
TCs:
Observed the pxeboot cfg file for a new host is configured
with param multi-drivers-switch=<ver from service parameter>
Story: 2010651
Task: 48276
Signed-off-by: Bin Qian <bin.qian@windriver.com>
Change-Id: I6aebff98a5bb831de82f6da07ac53978b17f8caf
2412a68815