Bug 51269

I would like my tomcat instance to be able to respond to multiple DNS subdomains without having to explicitly specify those subdomains.  For example I would like to be able to create an alias that looks like

         <Host name="myapp" >
            <Alias>*.myapp.mycompany.com</Alias>
         </Host>

With this configuration, the server should respond properly to 
a.b.c.myapp.mycompany.com
b.c.d.myapp.mycompany.com
c.d.e.myapp.mycompany.com
etc.

This seems like it could be done easily by changing org.apache.catalina.connector.MapperListener:registerEngine so that instead of 
    if (aliases[i].equalsIgnoreCase(defaultHost)){
        isRegisteredWithAlias = true;
        break;
    }
we instead did something like
    if(Pattern.matches(alias[i].toLowerCase().replaceAll("\\*", ".*?"), defaultHost.toLowerCase())) {
        isRegisteredWithAlias = true;
        break;
    }