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)


}
                    if (def.isRequired()) {
                        description = "[REQUIRED] " + description;
                    }
                    builder.description(description + "\n");
                    if (def.getDataType().equals(Boolean.class)) {
                        builder.arity("0..1");
                    }
                    if (i > 0) {
                        builder.hidden(true);
                    } else {
                        builder.hidden(def.getHidden());
                    }
                    subCommandSpec.addOption(builder.build());
                }
            }
            for (String legacyArg : legacyNoLongerCommandArguments) {
                final CommandLine.Model.OptionSpec.Builder builder = CommandLine.Model.OptionSpec.builder("--" + legacyArg)
                        .required(false)
                        .type(String.class)
                        .description("Legacy CLI argument")
                        .hidden(true);
                subCommandSpec.addOption(builder.build());
                String kabobArg = StringUtil.toKabobCase(legacyArg);
                if (! kabobArg.equals(legacyArg)) {
                    final CommandLine.Model.OptionSpec.Builder kabobOptionBuilder =
                        CommandLine.Model.OptionSpec.builder("--" + kabobArg)
                            .required(false)
                            .type(String.class)
                            .hidden(true)