Marcel Overdijk's example to override application.properties defaults ... should work in boot after 1.3.1 (bug in 1.3)

PropertyDefaultsPostProcessor.java

@Order(Ordered.LOWEST_PRECEDENCE)
public class MyFrameworkPropertyDefaultsPostProcessor implements EnvironmentPostProcessor {

    private static final String DEFAULT_MY_FRAMEWORK_PROPERTIES = "defaultMyFrameworkProperties";
    private static final String DEFAULT_MY_FRAMEWORK_PROPERTIES_LOCATION = "/config/myFramework-application.yml";

    private YamlPropertySourceLoader propertySourceLoader = new YamlPropertySourceLoader();

    @Override
    public void postProcessEnvironment(ConfigurableEnvironment environment, SpringApplication application) {
        Resource myFrameworkDefaults = new ClassPathResource(DEFAULT_MY_FRAMEWORK_PROPERTIES_LOCATION);
        String[] profiles = environment.getActiveProfiles();
        load(environment, myFrameworkDefaults, null);
        if (profiles.length > 0) {
            for (String profile : profiles) {
                load(environment, myFrameworkDefaults, profile);
            }
        }
    }

    private void load(ConfigurableEnvironment environment, Resource resource, String profile) {
        try {
            PropertySource<?> propertySource = propertySourceLoader.load(DEFAULT_MY_FRAMEWORK_PROPERTIES, resource, profile);
            if (propertySource != null) {
                environment.getPropertySources().addLast(propertySource);
            }
        } catch (IOException e) {
            // ignore
        }
    }
}