Organized imports for main classes

Change-Id: I3b05d7f289706aef04019a820be9989f8fb54945
diff --git a/src/main/java/net/floodlightcontroller/core/web/SwitchRoleResource.java b/src/main/java/net/floodlightcontroller/core/web/SwitchRoleResource.java
index 944c725..f9eb877 100644
--- a/src/main/java/net/floodlightcontroller/core/web/SwitchRoleResource.java
+++ b/src/main/java/net/floodlightcontroller/core/web/SwitchRoleResource.java
@@ -2,13 +2,12 @@
 
 import java.util.HashMap;
 
-import org.openflow.util.HexString;
-import org.restlet.resource.ServerResource;
-
 import net.floodlightcontroller.core.IFloodlightProviderService;
 import net.floodlightcontroller.core.IOFSwitch;
 
+import org.openflow.util.HexString;
 import org.restlet.resource.Get;
+import org.restlet.resource.ServerResource;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;