Feature/bael 2077 dhawal (#5232)

* [BAEL-2077] - Add section in Spring Profiles article

* removed irrelevent code

* [BAEL-2077] - Removing unnecessory files and adding Integration test file

spring-all/src/main/java/org/baeldung/profiles/SpringProfilesConfig.java

@@ -2,9 +2,11 @@ package org.baeldung.profiles;
 
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
 
 @Configuration
 @ComponentScan("org.baeldung.profiles")
+@PropertySource(value = "classpath:application.properties")
 public class SpringProfilesConfig {
 
 }

spring-all/src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.profiles.active=@spring.profiles.active@