MB-32514: Migrate testapp_bucket to nlohmann::json
MB-32514: Migrate testapp_bucket to nlohmann::json

Change-Id: Ibb2870ea2a6c8d12eb3eb8d5d0f2df8e6deb8102
Reviewed-on: http://review.couchbase.org/104144
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine