[config:import] return exit code on error (#3083) (#3084)
[config:import] return exit code on error (#3083) (#3084)

* [config:import] return exit code on error (#3083)

* [config:import] Print "importing" before starting (#3083)

This is more accurate than printing it after the import has finished.

revagomes/DrupalConsole,revagomes/DrupalConsole,revagomes/DrupalConsole