Updated for what is available in (last common ancestor of) 2206.
(So newer messages such as ipsec_spd_entry_add_del_v2 are not used yet.)
+ Removed messgages documented as unused.
- Did not check if more become unused.
+ Restored alphabetical order.
Change-Id: I4191c3f8629106f52ce387d03f30f9f973ffbefe
Signed-off-by: Vratko Polak <vrpolak@cisco.com>