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 (StringUtil.isNotEmpty(main.liquibaseHubUrl)) {
                        DeprecatedConfigurationValueProvider.setData(HubConfiguration.LIQUIBASE_HUB_URL, main.liquibaseHubUrl);
                    }
                    main.applyDefaults();
                    Map<String, Object> innerScopeObjects = new HashMap<>();
                    innerScopeObjects.put("defaultsFile", LiquibaseCommandLineConfiguration.DEFAULTS_FILE.getCurrentValue());
                    if (!Main.runningFromNewCli) {
                        innerScopeObjects.put(Scope.Attr.resourceAccessor.name(), new ClassLoaderResourceAccessor(main.configureClassLoader()));
                    }
                    Scope.child(innerScopeObjects, () -> {
                        main.doMigration();
                        if (!Main.runningFromNewCli) {
                            if (COMMANDS.UPDATE.equals(main.command)) {
                                Scope.getCurrentScope().getUI().sendMessage(coreBundle.getString("update.successful"));
                            } else if (main.command.startsWith(COMMANDS.ROLLBACK)) {
                                Scope.getCurrentScope().getUI().sendMessage(coreBundle.getString("rollback.successful"));
                            } else {
                                Scope.getCurrentScope().getUI().sendMessage(String.format(coreBundle.getString("command.successful"), main.command));
                            }
                        }
                    });
                } catch (Throwable e) {
                    String message = e.getMessage();
                    if (e.getCause() != null) {
                        message = e.getCause().getMessage();
                    }
                    if (message == null) {
                        message = coreBundle.getString("unknown.reason");
                    }