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)


final CommandLine.Model.CommandSpec groupSpec = CommandLine.Model.CommandSpec.wrapWithoutInspection(null, defaultFactory);
        configureHelp(groupSpec, false);
        groupSpec.optionsCaseInsensitive(true);
        groupSpec.subcommandsCaseInsensitive(true);
        parent.addSubcommand(groupName[groupName.length - 1], groupSpec);
        return groupSpec;
    }
    private String toEnvVariable(String property) {
        return StringUtil.toKabobCase(property).replace(".", "_").replace("-", "_").toUpperCase();
    }
    private SortedSet<CommandDefinition> getCommands() {
        final CommandFactory commandFactory = Scope.getCurrentScope().getSingleton(CommandFactory.class);
        return commandFactory.getCommands(false);
    }
    private void addGlobalArguments(CommandLine commandLine) {
        final CommandLine.Model.CommandSpec rootCommandSpec = commandLine.getCommandSpec();
        final SortedSet<ConfigurationDefinition<?>> globalConfigurations = Scope.getCurrentScope().getSingleton(LiquibaseConfiguration.class).getRegisteredDefinitions(false);
        for (ConfigurationDefinition<?> def : globalConfigurations) {
            final String[] argNames = toArgNames(def);
            for (int i = 0; i < argNames.length; i++) {
                final CommandLine.Model.OptionSpec.Builder optionBuilder = CommandLine.Model.OptionSpec.builder(argNames[i])
                        .required(false)
                        .type(String.class);
                String description = "(" + def.getKey() + ")\n"
                        + "(" + toEnvVariable(def.getKey()) + ")";
                if (def.getDefaultValue() != null) {
                    if (def.getDefaultValueDescription() == null) {
                        description = "DEFAULT: " + def.getDefaultValue() + "\n" + description;
                    } else {
                        description = "DEFAULT: " + def.getDefaultValueDescription() + "\n" + description;