Running Keystack on CLI in secured mode 

- Running Keystack in CLI secured mode will verify user account existance by the user's API-Key
- This feature is disabled by default
- If user exists, the test will continue
- Otherwise, the test will abort

1> Edit /opt/KeystackSystem/keystackSystemSettings.yml
   cliSecuredMode: True

2> Users have to log into the Keystack UI to get their API-Key in "Users Accounts"

3> Include -api_key <api_key> on Keystack CLI

keystack run -playbook qa -domain Communal -api_key !@#$%^&*23455
