Add logging lib to classpath in test scope

This lets us take advantage of log messages while running tests.
Setting level to warning, so they won't be noisy by default.

pom.xml

@@ -159,6 +159,12 @@
       <version>1.3</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.spotify</groupId>
+      <artifactId>logging</artifactId>
+      <version>2.1.0</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 
   <build>

src/test/resources/logback-test.xml

@@ -0,0 +1,15 @@
+<configuration>
+
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <!-- encoders are assigned the type
+         ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+    <encoder>
+      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
+    </encoder>
+  </appender>
+
+  <root level="warn">
+    <appender-ref ref="STDOUT" />
+  </root>
+
+</configuration>