This updates the release note for the new 'ilo' hardware type
to mention that it also supports 'iscsi' deploy interface.
The separate release note about ilo supporting iscsi deploy interface
is removed.
This is all going into the same release, and it is confusing to have
two separate release notes about the ilo hardware type.
Change-Id: I4087d7f805dc7710b554c102f428b92cead1ebf9
Related-Bug: #1689274
Added hardware type 'ilo' for HPE ProLiant servers based on iLO 4
management engine.
'ilo' hardware type only supports 'agent' deploy method and does
not support 'iscsi' deploy method.
Change-Id: Id2186717633630fabe11041634759adb3b74a0f9
Closes-Bug: #1666787