https://github.com/eclipse/microprofile-config/blob/master/spec/src/main/asciidoc/configsources.asciidoc#default-configsources mentions that the file should be on the classpath.
However, does this imply that the file is only read, while in a WAR file, from WEB-INF/classes/META-INF? If so, can we add some TCK tests that check this?