An incomplete configuration can be created

[jvanzyl]

I created a configuration bundle using asconfig that did not have a jvm.properties and I was allowed to create this bundle and discovered the issue when the server started up. Would be nice to be warned while creating the configuration that its insufficient.

[dain]

That would assume that airship is only supports airlift binaries, but the only requirement for airship is that the config contains a bin/launcher executable.

Maybe we should have a special bundler for airlift configs that performs verification.