<!--- This environment context section helps us quickly review your PR. 
      Please take a minute to fill-out this information. -->


## Environment
macOS Big-sur
**Liquibase Version**:
4.4.0
**Liquibase Integration & Version**:
CLI
**Operating System Type & Version**:
macOS big sur

## Description
After i had installed liquibase **4.4.0** from [official site](https://www.liquibase.org/download)  installer for mac os
i found out that command **updateTestingRollback** not working error was something like Unexpected token  `updateTestingRollback` (don't worry i had setted up uri, username and password parameters). Than i went to documentation and it was not marked as deprecated.
After that i typed `liquibase updateTestingRollback --help` in my terminal and the command was not in list of commands.

## Steps To Reproduce
List the steps to reproduce the behavior.

1. Download installer with version 4.4.0 from [official site](https://www.liquibase.org/download).
1. Install liquibase.
1. run `liquibase updateTestingRollback --help` in terminal and see there is no command in list of available commands.


package liquibase.hub;
import liquibase.*;
import liquibase.changelog.ChangeLogIterator;
import liquibase.changelog.ChangeSet;
import liquibase.changelog.DatabaseChangeLog;
import liquibase.changelog.visitor.ListVisitor;
import liquibase.changelog.visitor.RollbackListVisitor;
import liquibase.command.CommandResults;
import liquibase.command.CommandScope;
import liquibase.command.core.InternalSyncHubCommandStep;
import liquibase.command.core.RegisterChangelogCommandStep;