chore: remove problematic mongoose-long dep and use mongodb 3.4 in tests

Author: vkarpov15

.travis.yml

@@ -11,13 +11,13 @@ node_js:
  - "0.10"
  - "iojs"
 before_script:
- - wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.6.11.tgz
- - tar -zxvf mongodb-linux-x86_64-2.6.11.tgz
+ - wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.4.23.tgz
+ - tar -zxvf mongodb-linux-x86_64-3.4.23.tgz
  - mkdir -p ./data/db/27017
  - mkdir -p ./data/db/27000
  - printf "\n--timeout 8000" >> ./test/mocha.opts
- - ./mongodb-linux-x86_64-2.6.11/bin/mongod --fork --dbpath ./data/db/27017 --syslog --port 27017
- - export PATH=`pwd`/mongodb-linux-x86_64-2.6.11/bin/:$PATH
+ - ./mongodb-linux-x86_64-3.4.23/bin/mongod --fork --dbpath ./data/db/27017 --syslog --port 27017
+ - export PATH=`pwd`/mongodb-linux-x86_64-3.4.23/bin/:$PATH
  - sleep 3
 script:
  - npm test