Completer fixes for core ONOS CLI commands

Change-Id: Icedfc542ad93a2825b592f3deb6cd96d91779544
diff --git a/cli/src/main/java/org/onosproject/cli/net/AllocationsCommand.java b/cli/src/main/java/org/onosproject/cli/net/AllocationsCommand.java
index de4a4dd..5e7b4fe 100644
--- a/cli/src/main/java/org/onosproject/cli/net/AllocationsCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/AllocationsCommand.java
@@ -29,6 +29,7 @@
 import com.google.common.collect.ImmutableSet;
 import org.apache.karaf.shell.api.action.Argument;
 import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.Completion;
 import org.apache.karaf.shell.api.action.lifecycle.Service;
 import org.apache.karaf.shell.api.action.Option;
 import org.onlab.packet.MplsLabel;
@@ -73,10 +74,12 @@
 
     @Argument(index = 0, name = "deviceIdString", description = "Device ID",
               required = false, multiValued = false)
+    @Completion(DeviceIdCompleter.class)
     String deviceIdStr = null;
 
     @Argument(index = 1, name = "portNumberString", description = "PortNumber",
               required = false, multiValued = false)
+    @Completion(PortNumberCompleter.class)
     String portNumberStr = null;