Refactor actuator package locations

Restructure actuator packages to improve structure. The following
changes have been made:

 - Separate actuator and actuator auto-configuration into different
   modules.
 - Move endpoint code into `spring-boot-actuator`.
 - Move `Endpoint` implementations from a single package into
   technology specific packages.
 - Move `HealthIndicator` implementations from a single package into
   technology specific packages.
 - As much as possible attempt to mirror the `spring-boot` package
   structure and class naming in `spring-boot-actuator` and
   `spring-boot-actuator-autoconfigure`.
 - Move `DataSourceBuilder` and DataSource meta-data support from
   `spring-boot-actuator` to `spring-boot`.

Fixes gh-10261

spring-boot-docs/pom.xml

@@ -27,6 +27,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-actuator</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-actuator-autoconfigure</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-autoconfigure</artifactId>
@@ -923,10 +927,10 @@
 										</artifactItem>
 										<artifactItem>
 											<groupId>org.springframework.boot</groupId>
-											<artifactId>spring-boot-actuator</artifactId>
+											<artifactId>spring-boot-actuator-autoconfigure</artifactId>
 											<version>${project.version}</version>
 											<outputDirectory>
-												${project.build.directory}/auto-config/spring-boot-actuator
+												${project.build.directory}/auto-config/spring-boot-actuator-autoconfigure
 											</outputDirectory>
 											<includes>META-INF/spring.factories</includes>
 										</artifactItem>