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)


);
                return;
            } else if (COMMANDS.GENERATE_CHANGELOG.equalsIgnoreCase(command)) {
                String currentChangeLogFile = this.changeLogFile;
                if (currentChangeLogFile == null) {
                    
                    currentChangeLogFile = "";
                }
                File file = new File(currentChangeLogFile);
                if (file.exists() && (!Boolean.parseBoolean(overwriteOutputFile))) {
                    throw new LiquibaseException(
                            String.format(coreBundle.getString("changelogfile.already.exists"), currentChangeLogFile));
                } else {
                    try {
                        if (!file.delete()) {
                            
                        }
                    } catch (SecurityException e) {
                        throw new LiquibaseException(
                                String.format(coreBundle.getString("attempt.to.delete.the.file.failed.cannot.continue"),
                                        currentChangeLogFile
                                ), e
                        );
                    }
                }
                CatalogAndSchema[] finalTargetSchemas = computedSchemas.finalTargetSchemas;
                CommandLineUtils.doGenerateChangeLog(currentChangeLogFile, database, finalTargetSchemas,
                        StringUtil.trimToNull(diffTypes), StringUtil.trimToNull(changeSetAuthor),
                        StringUtil.trimToNull(changeSetContext), StringUtil.trimToNull(dataOutputDirectory),
                        diffOutputControl);