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)


integrationDetails.setName("cli");
        final ListIterator<String> argIterator = Arrays.asList(args).listIterator();
        while (argIterator.hasNext()) {
            final String arg = argIterator.next();
            if (arg.startsWith("--")) {
                if (arg.contains("=")) {
                    String[] splitArg = arg.split("=", 2);
                    String argKey = "argument__" + splitArg[0].replaceFirst("^--", "");
                    if (splitArg.length == 2) {
                        integrationDetails.setParameter(argKey, splitArg[1]);
                    } else {
                        integrationDetails.setParameter(argKey, "true");
                    }
                } else {
                    String argKey = "argument__" + arg.replaceFirst("^--", "");
                    if (argIterator.hasNext()) {
                        final String next = argIterator.next();
                        if (next.startsWith("--") || isCommand(next)) {
                            integrationDetails.setParameter(argKey, "true");
                            argIterator.previous(); 
                        } else {
                            integrationDetails.setParameter(argKey, next);
                        }
                    } else {
                        integrationDetails.setParameter(argKey, "true");
                    }
                }
            }
        }
        scopeObjects.put("integrationDetails", integrationDetails);