deprecated class NoOpPasswordEncoder in Spring boot security

[sarannrich]

The old AuthenticationManagerBuilders are no longer supported

                .roles("USER").and().withUser("admin1").password("secret1")
                .roles("USER", "ADMIN");```

They now need to be written as below.

```auth.inMemoryAuthentication()
            .withUser("user1").password("{noop}secret1").roles("USER")
            .and().withUser("admin1").password("{noop}secret1").roles("USER", "ADMIN");```

See ![this](https://stackoverflow.com/questions/50429483/spring-security-authentication-how-to-get-rid-of) solution on StackOverflow.