Added ability to remove host by CLI and by the provider on device/port down events.

Change-Id: I28de4b6b5bbfb5a00f35e1808bcd916369d7d1a4
diff --git a/cli/src/main/java/org/onlab/onos/cli/net/HostRemoveCommand.java b/cli/src/main/java/org/onlab/onos/cli/net/HostRemoveCommand.java
new file mode 100644
index 0000000..5837a5e
--- /dev/null
+++ b/cli/src/main/java/org/onlab/onos/cli/net/HostRemoveCommand.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onlab.onos.cli.net;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onlab.onos.cli.AbstractShellCommand;
+import org.onlab.onos.net.HostId;
+import org.onlab.onos.net.host.HostAdminService;
+
+/**
+ * Removes an end-station host.
+ */
+@Command(scope = "onos", name = "host-remove",
+         description = "Removes an end-station host")
+public class HostRemoveCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "id", description = "Host ID",
+              required = true, multiValued = false)
+    String id = null;
+
+    @Override
+    protected void execute() {
+        get(HostAdminService.class).removeHost(HostId.hostId(id));
+    }
+
+}
diff --git a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 073d237..1621069 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -207,6 +207,13 @@
             <action class="org.onlab.onos.cli.net.HostsListCommand"/>
         </command>
         <command>
+            <action class="org.onlab.onos.cli.net.HostRemoveCommand"/>
+            <completers>
+                <ref component-id="hostIdCompleter"/>
+                <null/>
+            </completers>
+        </command>
+        <command>
             <action class="org.onlab.onos.cli.net.AddressBindingsListCommand"/>
         </command>