DataMongoTestIntegrationTests is flaky as Embedded Mongo fails to start with "Could not start process: <EOF>"

[wilkinsona]

Tests using Embedded Mongo fail intermittently with "Caused by: java.io.IOException: Could not start process: ". It's not clear if this is a Mongo problem or an Embedded Mongo problem. Others have seen the problem as well but there doesn't appear to be a solution. Where we don't need to be using Embedded Mongo, we should consider switching to Testcontainers where there's built-in support for retrying when the service in the container doesn't start up correctly.