Upgrade GPU Cluster Manager

NOTE: Currently upgrading from GPU Cluster Manager 0.3.0 to 0.4.0 is not supported. If you already have GPU Cluster Manager (aka MMAI or MVAI) 0.3.0 and wish to migrate to 0.4.0, you will need to completely uninstall the software following instructions provided in the 0.3.0 version of documentation, then install 0.4.0 on your now "clean" environment.

Upgrade functionality is anticipated to come out in a future release.