Reproducing Spring Cloud AWS Issue #1003

1. Start Localstack and create parameter in SSM

$ localstack start
$ aws --endpoint-url=http://localhost:4566 --region=eu-west-1 ssm put-parameter --name /config/message --value value1

2. Run Spring Boot application.
3. Observe value in console
4. Update parameter in SSM

$ aws --endpoint-url=http://localhost:4566 --region=eu-west-1 ssm put-parameter --name /config/message --value new-value

5. Observer new value in console