[CORD-1434][CORD-1112] DHCP relay manager

Change-Id: I2e4d8fc8e85ed66b33ac517660ee72a1c0183597
diff --git a/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java b/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
index 7190aea..b762e79 100644
--- a/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
+++ b/apps/dhcp/app/src/main/java/org/onosproject/dhcp/impl/DhcpManager.java
@@ -28,7 +28,6 @@
 import org.apache.felix.scr.annotations.Service;
 import org.onlab.packet.ARP;
 import org.onlab.packet.DHCP;
-import org.onlab.packet.dhcp.DhcpOption;
 import org.onlab.packet.Ethernet;
 import org.onlab.packet.IPv4;
 import org.onlab.packet.Ip4Address;
@@ -37,6 +36,7 @@
 import org.onlab.packet.TpPort;
 import org.onlab.packet.UDP;
 import org.onlab.packet.VlanId;
+import org.onlab.packet.dhcp.DhcpOption;
 import org.onlab.util.SharedScheduledExecutors;
 import org.onlab.util.Tools;
 import org.onosproject.cfg.ComponentConfigService;
@@ -77,6 +77,7 @@
 import java.util.Date;
 import java.util.Dictionary;
 import java.util.HashSet;
+
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;