Upon code review in statecouchdb.go and couchdb.go, it appears
there are occurrences of the following error producing functions
without errors captured and handled:

json.Marshal()
json.Unmarhsal()
decoder.Decode()
   e.g. json.NewDecoder(resp.Body).Decode(&dbResponse)
   e.g. decoder.Decode(&genericMap)

Change-Id: Id632d636d7e2de817abb60961f908f7ad5222bec
Signed-off-by: Chris Elder <chris.elder@us.ibm.com>