feat: upgrade Neo4j to 4.0

[keremsahin1]

LinkedIn internally migrated to Neo4j 4.0. To better serve OSS, it's better to upgrade Neo4j to 4.0 here as well. The Java clients are already on 4.0 and they are compatible with 3.5 and 4.0. In this change, only Neo4j server is being upgraded from 3.5 to 4.0. If a user already has a Neo4j docker volume with a graph db created with Neo4j 3.5, with this change, that will be auto upgraded to 4.0 without any extra work.

Tests

Test1: In-place DB upgrade 3.5 -> 4.0

1. Run ./docker/dev.sh without this diff (Neo4j 3.5 running).
2. Run ./docker/ingestion/ingestion.sh to ingest sample data.
3. Stopped all containers.
4. Run ./docker/dev.sh with this diff (Neo4j 4.0 running).
5. Did tests using Neo4j browser and also confirmed that relationship tab for datasets (served by graph) is working as expected.

Test2: 4.0

1. Removed all Docker containers, volumes and networks.
2. Run ./docker/dev.sh with this diff (Neo4j 4.0 running).
3. Run ./docker/ingestion/ingestion.sh to ingest sample data.
4. Did tests using Neo4j browser and also confirmed that relationship tab for datasets (served by graph) is working as expected.

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable)

[mars-lan]

🎉

[camelliazhang]

Good job! 💯