[DCOS-29593] Use introspection of stub universe JSON to determine package name (#3193)
[DCOS-29593] Use introspection of stub universe JSON to determine package name (#3193)

* Changed exception handlers and added multi packages names validation

* change exception handling

mesosphere/dcos-commons,mesosphere/dcos-commons,mesosphere/dcos-commons,mesosphere/dcos-commons,mesosphere/dcos-commons