JAVA-853: Move remaining spring-boot into spring-boot-modules (#8778)

* JAVA-853: Move remaining spring-boot into spring-boot-modules

* JAVA-853: Update README

* JAVA-853: Fix relativePath attributes in spring-boot-parent/* modules

spring-boot-modules/spring-boot-parent/spring-boot-with-custom-parent/pom.xml

@@ -11,7 +11,7 @@
         <groupId>com.baeldung</groupId>
         <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
 
     <dependencies>

spring-boot-modules/spring-boot-parent/spring-boot-with-starter-parent/pom.xml

@@ -12,7 +12,7 @@
         <groupId>com.baeldung</groupId>
         <artifactId>parent-boot-2</artifactId>
         <version>0.0.1-SNAPSHOT</version>
-        <relativePath>../../parent-boot-2</relativePath>
+        <relativePath>../../../parent-boot-2</relativePath>
     </parent>
 
     <dependencyManagement>

spring-boot-modules/spring-boot/README.MD

@@ -31,3 +31,4 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [Spring Shutdown Callbacks](https://www.baeldung.com/spring-shutdown-callbacks)
 - [Container Configuration in Spring Boot 2](https://www.baeldung.com/embeddedservletcontainercustomizer-configurableembeddedservletcontainer-spring-boot)
 - [Validation in Spring Boot](https://www.baeldung.com/spring-boot-bean-validation)
+- [The BeanDefinitionOverrideException in Spring Boot](https://www.baeldung.com/spring-boot-bean-definition-override-exception)