Don't include "Command" suffix in WHOIS metrics command name label

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=152414152

java/google/registry/whois/WhoisMetrics.java

@@ -112,7 +112,9 @@ public class WhoisMetrics {
       private Clock clock = null;
 
       public Builder setCommand(WhoisCommand command) {
-        return setCommandName(command.getClass().getSimpleName());
+        // All WHOIS command class names share the "Command" suffix, so strip it out in order to
+        // have shorter labels.
+        return setCommandName(command.getClass().getSimpleName().replaceFirst("Command$", ""));
       }
 
       public abstract Builder setCommandName(String commandName);