Add description to ssh command

Change-Id: If9e5c5659afa64281e634ac4fe54b0c7be121bdf

src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java

diff --git a/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java b/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java
index 770c6f3..a55aad5 100644
--- a/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java
+++ b/src/main/java/com/google/gerrit/plugins/HelloWorldCommandModule.java
@@ -19,6 +19,7 @@
 public class HelloWorldCommandModule extends PluginCommandModule {
   @Override
   protected void configureCommands() {
-    command("print").to(PrintHelloWorldCommand.class);
+    command(PrintHelloWorldCommand.class);
+    alias("say-hello", PrintHelloWorldCommand.class);
   }
 }

src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java

diff --git a/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java b/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java
index d5412ed..7122c98 100644
--- a/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java
+++ b/src/main/java/com/google/gerrit/plugins/PrintHelloWorldCommand.java
@@ -14,11 +14,13 @@
 
 package com.google.gerrit.plugins;
 
+import com.google.gerrit.sshd.CommandMetaData;
 import com.google.gerrit.sshd.SshCommand;
 
 import org.kohsuke.args4j.Argument;
 import org.kohsuke.args4j.Option;
 
+@CommandMetaData(name="print", descr="Print greeting in different languages")
 public final class PrintHelloWorldCommand extends SshCommand {
 
   @Argument(usage = "name of user")