Resolve race condition when transistioning from initialization to the first state.
Resolve race condition when transistioning from initialization to the first state.

Fixes #196

* Rework get_fsm initialization.
* Remove obsolete waiting_metadata_request state.

dragonfax/riak_cs,dragonfax/riak_cs,GabrielNicolasAvellaneda/riak_cs,yangchengjian/riak_cs,laurenrother/riak_cs,sdebnath/riak_cs,GabrielNicolasAvellaneda/riak_cs,sdebnath/riak_cs,basho/riak_cs_lfs,basho/riak_cs,GabrielNicolasAvellaneda/riak_cs,dragonfax/riak_cs,dragonfax/riak_cs,basho/riak_cs,laurenrother/riak_cs,yangchengjian/riak_cs,yangchengjian/riak_cs,basho/riak_cs,basho/riak_cs_report,laurenrother/riak_cs,sdebnath/riak_cs,GabrielNicolasAvellaneda/riak_cs,sdebnath/riak_cs,yangchengjian/riak_cs,basho/riak_cs,laurenrother/riak_cs