[BUG] G11n-java-client New workflow's Translation.getMessage must be able to use latest source messages from VIP service

[jessiejuachon]

Describe the bug
TranslationMessage.getMessage is not able to fetch "latest" messages from VIP service and use them as source messages. This must be done as fallback for when messages_source.json is not supported locally.

To Reproduce
Steps to reproduce the behavior:

1. Do not configure offline bundles' location in config.properties
2. In VIP service, add new source strings to "latest", but not to "en" locale (a.k.a out-of-synch scenario)
3. In the client, call TranslationMessage.getMessage("en", component, key);
4. A VIP exception is thrown.

Expected behavior
Message that was added to "latest" in VIP service must be returned.

Additional context
This is to support use cases where source bundles are not together with the client code but instead are residing in other microservice's source code.

[lyiyu66]

The issue is fixed with commit bfb7deb.