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)


}
    private CommandLine buildPicoCommandLine() {
        final CommandLine.Model.CommandSpec rootCommandSpec = CommandLine.Model.CommandSpec.wrapWithoutInspection(null, defaultFactory);
        rootCommandSpec.name("liquibase");
        configureHelp(rootCommandSpec, true);
        rootCommandSpec.subcommandsCaseInsensitive(true);
        rootCommandSpec.usageMessage()
                .customSynopsis("liquibase [GLOBAL OPTIONS] [COMMAND] [COMMAND OPTIONS]\nCommand-specific help: \"liquibase <command-name> --help\"")
                .optionListHeading("\nGlobal Options\n")
                .commandListHeading("\nCommands\n")
        ;
        CommandLine commandLine = new CommandLine(rootCommandSpec, defaultFactory)
                .setCaseInsensitiveEnumValuesAllowed(true)
                .setOptionsCaseInsensitive(true)
                .setUsageHelpAutoWidth(true);
        addGlobalArguments(commandLine);
        for (CommandDefinition commandDefinition : getCommands()) {
            addSubcommand(commandDefinition, commandLine);
        }
        commandLine.setExecutionExceptionHandler((ex, commandLine1, parseResult) -> LiquibaseCommandLine.this.handleException(ex));
        return commandLine;
    }
    private int handleException(Throwable exception) {
        Throwable cause = exception;
        String bestMessage = exception.getMessage();
        while (cause.getCause() != null) {
            if (StringUtil.trimToNull(cause.getMessage()) != null) {
                bestMessage = cause.getMessage();
            }
            cause = cause.getCause();