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)


parseOptionArgument(arg, false);
            } else {
                throw new CommandLineParsingException(
                        String.format(coreBundle.getString("unexpected.value"), arg));
            }
        }
        
        
        parseDefaultPropertyFiles();
        
        
        
        if (liquibaseProLicenseKey == null) {
            String key = (String) Scope.getCurrentScope().getSingleton(LiquibaseConfiguration.class).getCurrentConfiguredValue(null, null, "liquibase.pro.licenseKey").getValue();
            liquibaseProLicenseKey = key;
        }
        if (liquibaseHubApiKey == null) {
            String key = HubConfiguration.LIQUIBASE_HUB_API_KEY.getCurrentValue();
            liquibaseHubApiKey = key;
        }
        
        
        
        if (propertyProviderClass == null) {
            Class clazz = LiquibaseCommandLineConfiguration.PROPERTY_PROVIDER_CLASS.getCurrentValue();
            if (clazz != null) {
                propertyProviderClass = clazz.getName();
            }
        }