
currently an invalid collection will error out on docs sanity, but this is misleading since the problem is that the collection name itself is invalid, a previous test verifying this should be introduced to avoid confusion.

example currently:
```
Running sanity test 'ansible-doc' with Python 3.7
ERROR: Command "ansible-doc -t module cyberark.ansible-security-automation-collection.cyberark_account cyberark.ansible-security-automation-collection.cyberark_authentication cyberark.ansible-security-automation-collection.cyberark_credential cyberark.ansible-security-automation-collection.cyberark_user" returned exit status 250.
>>> Standard Error
[WARNING]: module cyberark.ansible-security-automation-collection.cyberark_account not found in: /dev/null:/home/abehl/work/src/anshul_ansible/ansible/lib/ansible/modules
ERROR! Unexpected Exception, this is probably a bug: cannot unpack non-iterable NoneType object
```
##### ISSUE TYPE
- Feature Idea

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->
ansible-test

"""Common environment used for executing all programs."""
    env = dict(
        LC_ALL='en_US.UTF-8',
        PATH=os.environ.get('PATH', os.path.defpath),
    )
    required = (
        'HOME',
    )
    optional = (
        'LD_LIBRARY_PATH',
        'SSH_AUTH_SOCK',
        
        
        
        
        'OBJC_DISABLE_INITIALIZE_FORK_SAFETY',
        'ANSIBLE_KEEP_REMOTE_FILES',