Environment variables should not be logged

[ashtttt]

When a configured environment variable is not set, the library is printing out a warning stating the same, which is good, but in the log message it is also printing out all the environment variables which could be dangerous as some environment variables might have sensitive data like passwords. These logs could get shipped out to a log collector (like splunk) which can be viewed by the entire organization (at least in our case).

  @EnvironmentVariable("ENVIRONMENT")
  private String environment;

And logs are like,

WARNING [org.jeasy.props.processors.EnvironmentVariableAnnotationProcessor processAnnotation] - Environment variable 'ENVIRONMENT' on field 'environment' of type 'com.test..Config' not found in environment variables: [all the env vars]

[fmbenhassine]

Makes sense, even though I would not put sensitive data in clear text in environment variables. Fixed in 2df02e8. Thank you for raising this!