Nova-net requires a cells v1 configuration to run as of Ocata, but
aggregates and cells v1 are not golfing buddies, so don't let them
meet on the back nine.
Skip the aggregate add/remove host commands in the cells v1 config,
leave the others because they should work, just not be very useful.
And format things consistently.
Change-Id: I131d9f883cb7aca53ad82fb7d5fc6ee1c1e7d923