Create the DeployerPartitionHandler and related

DeployerStepExecutionHandler

Created a PartitionHandler that delegates to a TaskLauncher from Spring
Cloud Deployer to execute workers.

Resolves spring-cloud/spring-cloud-task#109

Updates per code review

spring-cloud-task-samples/batch-job/src/main/java/io/spring/BatchJobApplication.java

@@ -0,0 +1,16 @@
+package io.spring;
+
+import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.task.configuration.EnableTask;
+
+@SpringBootApplication
+@EnableTask
+@EnableBatchProcessing
+public class BatchJobApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(BatchJobApplication.class, args);
+	}
+}

spring-cloud-task-samples/batch-job/src/main/java/io/spring/configuration/JobConfiguration.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.spring.configuration;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import org.springframework.batch.core.Job;
+import org.springframework.batch.core.StepContribution;
+import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
+import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
+import org.springframework.batch.core.scope.context.ChunkContext;
+import org.springframework.batch.core.step.tasklet.Tasklet;
+import org.springframework.batch.repeat.RepeatStatus;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * @author Michael Minella
+ */
+@Configuration
+public class JobConfiguration {
+
+	private static final Log logger = LogFactory.getLog(JobConfiguration.class);
+
+	@Autowired
+	public JobBuilderFactory jobBuilderFactory;
+
+	@Autowired
+	public StepBuilderFactory stepBuilderFactory;
+
+	@Bean
+	public Job job1() {
+		return jobBuilderFactory.get("job1")
+				.start(stepBuilderFactory.get("job1step1")
+					.tasklet(new Tasklet() {
+						@Override
+						public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
+							logger.info("Job1 was run");
+							return RepeatStatus.FINISHED;
+						}
+					})
+					.build())
+				.build();
+	}
+
+	@Bean
+	public Job job2() {
+		return jobBuilderFactory.get("job2")
+				.start(stepBuilderFactory.get("job2step1")
+					.tasklet(new Tasklet() {
+						@Override
+						public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {
+							logger.info("Job2 was run");
+							return RepeatStatus.FINISHED;
+						}
+					})
+					.build())
+				.build();
+	}
+}