Reformat Item initializer lists

Make it easier to see how they are similar/differ.

Change-Id: Ia140dc18d5445d93aca4ac943ce481a5dcf2fd8d
Reviewed-on: http://review.couchbase.org/42623
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: abhinav dangeti <abhinav@couchbase.com>
Tested-by: abhinav dangeti <abhinav@couchbase.com>