Clarify Icehouse features not deployed by Fuel 5.0

I moved the list of Havana capabilities not supported by Fuel 4.x
into the Icehouse release, because it is supported.

Also changed phraseology from "not supported by" to "not deployed by"

Change-Id: I3ceebd22a2a1432d20bea8147401808250884daa
Closes-Bug: 1332324
(cherry picked from commit 3f3c2fcd49f4866b4331e09f41f5f1b9bfad8268)