Spring Boot 2.0.0.M4 breaks http basic auth in application.yml - spring-boot

Question

Spring Boot 1.5.6.RELEASE respected the basic-auth username and password as specified in my application.yml below.
I have upgraded to 2.0.0.M4 and now the application always starts with the default 'user' and randomly generated password. Basically the settings below are always completely ignored.
I saw some changes in the release note/doc specific to simplifying actuator security enabled/disabled. I didn't see anything specific to this.
Any ideas?
From my application.yml
security:
basic:
enabled: true
realm: some-service
user:
name: example_user
password: example_password
Update:
I've confirmed this functionality was just plainly taken out starting with Spring Boot 2.0.0.M4
In the appendices:
All the security.basic.* family of stuff is missing here from the M4 reference:
https://docs.spring.io/spring-boot/docs/2.0.0.M4/reference/html/common-application-properties.html
But appears here in the M3 reference:
https://docs.spring.io/spring-boot/docs/2.0.0.M3/reference/html/common-application-properties.html
I was able to temporarily downgrade to M3 to restore the previous functionality but would still appreciate some guidance on what replaced it. I just need a single hardcoded basic-auth user for this scenario. I'm aware I could use object configurations to do a much more complicated setup.

Answer 1

Edit 2018-01-31:
The ability to auto-configure a single user has been restored (via the spring.security.user configuration keys) starting with Spring Boot 2.0.0-RC1 (source).
Original answer:
The Spring Boot security.* properties have been deprecated starting with Spring Boot 2.0.0-M4. You can read about this in the Release Notes:
Security auto-configuration has been completely revisited: developers should read the companion blog post and refer to the Spring Boot 2.0 Security wiki page for more details about the change.
In order to restore the basic auth functionality you can register a custom WebSecurityConfigurerAdapter, like this:
#Configuration
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
#Bean
public InMemoryUserDetailsManager inMemoryUserDetailsManager() {
return new InMemoryUserDetailsManager(
User.withDefaultPasswordEncoder().username("user").password("password")
.authorities("ROLE_USER").build(),
User.withDefaultPasswordEncoder().username("admin").password("admin")
.authorities("ROLE_ACTUATOR", "ROLE_USER").build());
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
.requestMatchers(EndpointRequest.to("health", "info")).permitAll()
.requestMatchers(EndpointRequest.toAnyEndpoint()).hasRole("ACTUATOR")
.requestMatchers(StaticResourceRequest.toCommonLocations()).permitAll()
.antMatchers("/**").hasRole("USER")
.and()
.cors()
.and()
.httpBasic();
}
}
(This will also configure basic auth for the Actuator endpoints)
If you additionally need to read the username and password from a .properties file, you can simply inject the values using the #Value annotation.