MongoDB4.4 on Focal

.travis.yml

---
language: node_js
os: linux
dist: focal
node_js:
  - '12'
addons:
  apt:
    sources:
    - sourceline: deb https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/4.4 multiverse
      key_url: https://www.mongodb.org/static/pgp/server-4.4.asc
before_install:
    - sudo apt-get -y purge mongodb-server-core
    - sudo rm -rf /var/lib/mongodb /var/log/mongodb
    - sudo apt-get -y install mongodb-org
    - sudo systemctl start mongod
    - sudo systemctl status mongod
script: true