DATAMONGO-865 - Adjust test dependencies to avoid ClassNotFoundException during test runs.

Added jul-to-slf4j dependency to avoid exceptions being logged during test runs.

Original pull request: #135.

spring-data-mongodb/pom.xml

@@ -137,6 +137,13 @@
 			<scope>test</scope>
 		</dependency>
 		
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>jul-to-slf4j</artifactId>
+			<version>${slf4j}</version>
+			<scope>test</scope>
+		</dependency>
+		
 	</dependencies>
 	
 	<build>