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 (includeSystemClasspath) {
            classLoader = AccessController.doPrivileged(new PrivilegedAction<URLClassLoader>() {
                @Override
                public URLClassLoader run() {
                    return new URLClassLoader(urls.toArray(new URL[urls.size()]), Thread.currentThread()
                            .getContextClassLoader());
                }
            });
        } else {
            classLoader = AccessController.doPrivileged(new PrivilegedAction<URLClassLoader>() {
                @Override
                public URLClassLoader run() {
                    return new URLClassLoader(urls.toArray(new URL[urls.size()]), null);
                }
            });
        }
        Thread.currentThread().setContextClassLoader(classLoader);
        return classLoader;
    }
    /**
     * Do the actual database migration, i.e. apply the ChangeSets.
     *
     * @throws Exception
     */
    protected void doMigration() throws Exception {
        if (COMMANDS.HELP.equalsIgnoreCase(command)) {
            printHelp(System.err);
            return;
        }