SCT-6 Support RDBMS & Map Repositories

* `DefaultTaskConfigurer` returns only one `SimpleTaskRepository` all others have been removed
* `SimpleTaskRepository` can use `JdbcTaskExecutionDao` or a `MapTaskExecutionDao`
* Add `Jdbc` and Map` `TaskRepositoryFactoryBeans` to support the creation of the correct type of `SimpleTaskRepository`
* `TaskDatabaseInitializer` will initialize a database if a datasource is found and if they have not disabled it using the `spring.task.initialize.enable`
* Add tests
* Added Transaction Support
* Re-add the samples to `pom.xml`
* Samples pom skips install and deploy lifecycle targets.

spring-cloud-task-core/pom.xml

@@ -27,6 +27,10 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-autoconfigure</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-context</artifactId>
@@ -40,13 +44,12 @@
 			<artifactId>spring-aop</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>org.aspectj</groupId>
-			<artifactId>aspectjweaver</artifactId>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-jdbc</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<scope>test</scope>
+		<groupId>org.aspectj</groupId>
+			<artifactId>aspectjweaver</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
@@ -58,6 +61,16 @@
 			<artifactId>mockito-core</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.hsqldb</groupId>
+			<artifactId>hsqldb</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.apache.tomcat</groupId>
+			<artifactId>tomcat-jdbc</artifactId>
+			<scope>test</scope>
+		</dependency>
 	</dependencies>
 
 </project>