Message resolver not resolving messages properly

[lealceldeiro]

Describe the bug
The messages associated to their keys are not being resolved properly.

To Reproduce

1. Make a POST request to the login endpoint with an incorrect credentialas
2. In the response body see some similar to:

{
    "path": "<login path>",
    "message": "security.bad.credentials",
    "error": "security.unauthorized",
    ....
}

Expected behaviour
To see something like:

{
    "path": "<login path>",
    "message": "Bad credentials",
    "error": "Unauthorized",
    ....
}

Notice here the values for message and error are Bad credentials and Unauthorized, not their i18n keys security.bad.credentials and security.unauthorized

Additional context
Possible classes related in this issue:

• com.gms.util.i18n.MessageResolver
• com.gms.config.locale.LocaleConfig

[lealceldeiro]

This will be solved after merging branch fine-tune-server