Replace cJSON* with unique_ptr in failover-table
Replace cJSON* with unique_ptr in failover-table

Replaces cJSON raw pointers with unique_cJSON_ptrs where appropriate.

Change-Id: I6a0c2c98838086cc93e4b6385ffa1bb8d0635e2e
Reviewed-on: http://review.couchbase.org/72499
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>

membase/ep-engine,membase/ep-engine,membase/ep-engine,daverigby/ep-engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/ep-engine,daverigby/kv_engine,daverigby/kv_engine,couchbase/ep-engine,membase/ep-engine,couchbase/ep-engine,couchbase/ep-engine,daverigby/ep-engine,couchbase/ep-engine,daverigby/ep-engine