The classic iLO driver 'pxe_ilo', uses 'iscsi' deploy method and
there by avoids dependency on Swift Temp URL for glance images.
With no support to 'iscsi' deploy interface, 'ilo' hardware type
do not provide complete compatibility with all classic iLO drivers.
This commit adds support for 'iscsi' deploy interface for 'ilo'
hardware type so that one could compose a driver for a node that
matches any of the classic iLO drivers.
Closes-Bug: #1689274
Change-Id: I6c5f4d68020bcf58b83d74f45bb059f1807a80ee
dd04c35a1c