FSM was needed to manage concurrent Queries
and serial Invokes in 0.5/0.6.

There are no Queries in 1.0+ and Invokes are
concurrent. Hence FSM can be removed entirely
greatly simplifying the chaincode component.

Note that Shim FSM does not depend upon fabric
FSM. Hence Node and Java CC support can remove
Shim FSMs in their own time.

Phase 1 just removes FSM and makes sure both old
and new code share parity. We might do a Phase 2
to streamline the code further (but not essential).

patch 1
  . remove "trigger" funcs as all they do is send now
  . introduce "nextState" call to handle serialization of ready
    (the generalization could be useful)

Change-Id: I526d3041bedfeefc00d34e1e53a4e7465aa99584
Signed-off-by: Dinesh Kumar <dinesh.kumar@itpeoplecorp.com>
Signed-off-by: Srinivasan Muralidharan <srinivasan.muralidharan99@gmail.com>