Pulsar: add flag to enable transactions and set configuration

[nicoloboschi]

• Add withTransactions() method to enable transactions on Pulsar container
• Set default version to latest released (2.10.0)
• Added new tests to cover new methods
• Improved the documentation with simple usage and new methods

[nicoloboschi]

@eddumelendez @kiview PTAL

[kiview]

Thanks for the PR and special thanks for adding the docs @nicoloboschi. I added some general comments and questions 🙂

[kiview]

Pulsar tests failing on CI:
https://github.com/testcontainers/testcontainers-java/runs/6901742299?check_suite_focus=true#step:7:104

[nicoloboschi]

@kiview thanks for reviewing. I fixed your comments, could you review it again?

[eddumelendez]

thanks @nicoloboschi ! Really glad to see PulsarContainer will make people life easier :)

I have added minor suggestions and opened the topic about the strategies order.

[kiview]

CI is failing because of Spotless violations, you can run ./gradlew :pulsar:spotlessApply to fix them.

[kiview]

LGTM besides the open discussion about withConfiguration.

I would prefer if we switch it to withEnv, add an usage example to our docs, and further link the Pulsar docs once apache/pulsar#16085 is live.

[nicoloboschi]

@kiview I think you know better the testcontainers users than me
I removed the custom configuration method, added the constant inside the PulsarContainer with javadoc, I added a paragraph in the website that points to the Pulsar website for the Docker setup.
Also the explanation about PULSAR_PREFIX_ is already live: https://pulsar.apache.org/docs/getting-started-docker/#start-pulsar-in-docker

[nicoloboschi]

@kiview @eddumelendez PTAL again, I hope it's the latest round 🤞

[kiview]

LGTM, thanks for the great collaboration @nicoloboschi 🙌