Allow to execute tests against a remote server.

Update Maven pom to use "redis-host" and "redis-port" env. properties.
Default values point to localhost:6379.

Tests updated to use this properties and also defaulted to localhost:6379.

pom.xml

@@ -12,6 +12,12 @@
   		<scope>compile</scope>
   	</dependency>
   </dependencies>
+  
+  <properties>
+  	<redis-host>localhost</redis-host>
+  	<redis-port>6379</redis-port>
+  </properties>
+  
   <build>
     <plugins>
       <plugin>
@@ -23,6 +29,17 @@
               <target>1.6</target>
           </configuration>
       </plugin>
+      <plugin>
+      	<groupId>org.apache.maven.plugins</groupId>
+      	<artifactId>maven-surefire-plugin</artifactId>
+      	<version>2.6</version>
+      	<configuration>	
+					<systemPropertyVariables>
+						<redis-host>${redis-host}</redis-host>
+						<redis-port>${redis-port}</redis-port>
+					</systemPropertyVariables>
+				</configuration>
+      </plugin>
     </plugins>
   </build>
 </project>