Add latest logback as dependency (#4112)

frameworks/Java/servlet3/pom.xml

@@ -10,7 +10,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<java.version>1.8</java.version>
-		<slf4j.version>1.7.10</slf4j.version>
+		<slf4j.version>1.8.0-beta2</slf4j.version>
 	</properties>
 
 	<profiles>
@@ -92,6 +92,18 @@
 			<scope>compile</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>ch.qos.logback</groupId>
+			<artifactId>logback-classic</artifactId>
+			<version>1.3.0-alpha4</version>
+			<exclusions>
+				<exclusion>
+					<groupId>org.slf4j</groupId>
+					<artifactId>slf4j-api</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+
 	</dependencies>
 
 </project>