Fix for logback as a transitive dependency.

- updated pom.xml to have logback-classic in test scope.
- moved logback.xml from src/main/resources to src/test/resources

src/main/resources/logback.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration>
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
-            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} %msg%n</pattern>
-        </encoder>
-    </appender>
-
-    <root level="info">
-        <appender-ref ref="STDOUT"/>
-    </root>
-    
-    <logger name="org.apache" level="WARN"/>
-    <logger name="httpclient" level="WARN"/>
-</configuration>