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 (System.getProperty((String) entry.getKey()) == null) {
                        DeprecatedConfigurationValueProvider.setData((String) entry.getKey(), entry.getValue());
                    }
                } else {
                    Field field = getDeclaredField((String) entry.getKey());
                    Object currentValue = field.get(this);
                    if (currentValue == null) {
                        String value = entry.getValue().toString().trim();
                        if (field.getType().equals(Boolean.class)) {
                            field.set(this, Boolean.valueOf(value));
                        } else {
                            field.set(this, value);
                        }
                    }
                }
            } catch (NoSuchFieldException ignored) {
                if (strict) {
                    throw new CommandLineParsingException(
                            String.format(coreBundle.getString("parameter.unknown"), entry.getKey())
                    );
                } else {
                    Scope.getCurrentScope().getLog(getClass()).warning(
                            String.format(coreBundle.getString("parameter.ignored"), entry.getKey())
                    );
                }
            } catch (IllegalAccessException e) {
                throw new UnexpectedLiquibaseException(