Rely on spring-cloud-deployer autoconfig

- Deployer core/local uses 2.0.0.BUILD-SNAPSHOT
- Use pring-cloud-deployer-dependencies bom
- Remove ResourceLoadingAutoConfiguration as that is now in
  deployer itself with a way to configure loaders.
- spring-cloud-task-core now depends on spring-cloud-deployer-autoconfigure.
- Rest of deployer modules like support/maven are still defined in deps
  as those are optional in spring-cloud-deployer-autoconfigure.

spring-cloud-task-core/pom.xml

@@ -19,6 +19,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-autoconfigure</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.cloud</groupId>
+			<artifactId>spring-cloud-deployer-autoconfigure</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.cloud</groupId>
 			<artifactId>spring-cloud-deployer-resource-support</artifactId>