Refactoring scratch pad

Autolabcli-ng

1. On autolabjs exit, wipe out the gitlab credentials.

2. Implement the following commands
   autolabjs show labs #show active labs only
   autolabjs show labs -c <category> #categories are: scheduled, active, late, expired, all
   autolabjs show score -l <lab_name>
autolabjs show score -l <lab_name> -i <student_id>
autolabjs show time
autolabjs show status

   autolabjs eval bulk --list <student_list>
autolabjs lab create
autolabjs lab update
autolabjs lab delete
autolabjs admin restart -s <service_name>
autolabjs admin stats -s <service_name>
autolabjs admin logs -s <service_name>
autolabjs admin install -f
autolabjs admin uninstall
autolabjs admin update
autolabjs admin docker pull
autolabjs admin docker load
autolabjs admin docker pull
autolabjs admin docker build -c <component_name>

3. package (Module dependency) diagram for autolabcli application.

4. Debug messages sent to log manager by Winston logger. Caporal already has winston embedded in it. Make use of it.

5. Filter sensitive output from stdout and stderr of console.

6. Exception handling for all commands.

7. Generate proper error conditions. see issue #27.

8. autolab init must handle the password contains special characters. see issue #32.

References

1. mastering cli apps
2. Mocking stdin and stdout in node
3. Modular code structure in vorpal.js