Make 'configure apply' message flag mandatory

[thomas-anderson-bsl]

While it's convenient to allow configure apply without supplying a message (which uses the default commit message), it means that changes to the configuration are generally not commented well.

We should enforce the use of '--message' flag to encourage users to be more specific as to why a change to configuration has been made.

This needs to consider how the cli should handle restart --apply which does a restart and a configure apply