We have a liquibase command that looks something like this:

```sh
/liquibase/liquibase \
       --driver=org.postgresql.Driver \
       --changeLogFile="db.changelog-master.xml" \
       --url=<redacted> \
       --username=<redacted> \
       --password=<redacted> \
       update \
       -Dcoreschema="${core_schema}"
```

After upgrading the CLI from 4.3.3 to 4.4.0, it fails with the following error:

```
Unexpected argument(s): -Dcoreschema=public

For detailed help, try 'liquibase --help' or 'liquibase <command-name> --help'
```

Since the release notes state "this release should be 100% backwards compatible", I expect this is an oversight? Or is there a replacement for the `-Dproperty=value` syntax? I haven't found one looking through `--help` and the [property substitution docs](https://docs.liquibase.com/concepts/basic/changelog-property-substitution.html) at least.

The syntax can also still be found on https://docs.liquibase.com/tools-integrations/cli/home.html:

![image](https://user-images.githubusercontent.com/2620907/122090597-36d63400-ce08-11eb-92e8-d320cd5c5baa.png)


import liquibase.exception.CommandLineParsingException;
import liquibase.exception.CommandValidationException;
import liquibase.hub.HubConfiguration;
import liquibase.license.LicenseServiceFactory;
import liquibase.logging.LogMessageFilter;
import liquibase.logging.LogService;
import liquibase.logging.core.JavaLogService;
import liquibase.resource.CompositeResourceAccessor;
import liquibase.resource.FileSystemResourceAccessor;
import liquibase.ui.ConsoleUIService;
import liquibase.util.LiquibaseUtil;
import liquibase.util.StringUtil;
import picocli.CommandLine;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Paths;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.*;
import java.util.logging.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.ResourceBundle.getBundle;
import static liquibase.util.SystemUtil.isWindows;
public class LiquibaseCommandLine {