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)


* @param messages an array of Strings to which messages for issues found will be added
     */
    private void checkForUnexpectedCommandParameter(List<String> messages) {
        if (COMMANDS.UPDATE_COUNT.equalsIgnoreCase(command)
                || COMMANDS.UPDATE_COUNT_SQL.equalsIgnoreCase(command)
                || COMMANDS.UPDATE_TO_TAG.equalsIgnoreCase(command)
                || COMMANDS.UPDATE_TO_TAG_SQL.equalsIgnoreCase(command)
                || COMMANDS.CALCULATE_CHECKSUM.equalsIgnoreCase(command)
                || COMMANDS.DB_DOC.equalsIgnoreCase(command)
                || COMMANDS.TAG.equalsIgnoreCase(command)
                || COMMANDS.TAG_EXISTS.equalsIgnoreCase(command)
                || COMMANDS.CHANGELOG_SYNC_TO_TAG.equalsIgnoreCase(command)
                || COMMANDS.CHANGELOG_SYNC_TO_TAG_SQL.equalsIgnoreCase(command)) {
            if ((!commandParams.isEmpty()) && commandParams.iterator().next().startsWith("-")) {
                messages.add(coreBundle.getString(ERRORMSG_UNEXPECTED_PARAMETERS) + commandParams);
            }
        } else if (COMMANDS.STATUS.equalsIgnoreCase(command)
                || COMMANDS.UNEXPECTED_CHANGESETS.equalsIgnoreCase(command)) {
            if ((!commandParams.isEmpty())
                    && !commandParams.iterator().next().equalsIgnoreCase("--" + OPTIONS.VERBOSE)) {
                messages.add(coreBundle.getString(ERRORMSG_UNEXPECTED_PARAMETERS) + commandParams);
            }
        } else if (COMMANDS.DIFF.equalsIgnoreCase(command)
                || COMMANDS.DIFF_CHANGELOG.equalsIgnoreCase(command)) {
            if ((!commandParams.isEmpty())) {
                for (String cmdParm : commandParams) {
                    String caseInsensitiveCommandParam = cmdParm.toLowerCase();
                    if (!caseInsensitiveCommandParam.startsWith("--" + OPTIONS.REFERENCE_USERNAME.toLowerCase())
                            && !caseInsensitiveCommandParam.startsWith("--" + OPTIONS.REFERENCE_PASSWORD.toLowerCase())
                            && !caseInsensitiveCommandParam.startsWith("--" + OPTIONS.REFERENCE_DRIVER.toLowerCase())