No prompt for external-db feature in Genesis New

[ryanmriddell]

While we have an external-db feature in the kit, when genesis new is ran, it does not prompt for the usage of an external-db.

This is important because when the external-db.yml is used it only determines the password by a vault path (referenced in the previously mentioned external-db.yml on line 26. There is a way around it by doing genesis add-secrets, but the intended usage of the kit is to prompt us during genesis new for the password/other external-db information(host, port, etc).

[norman-abramovitz]

Added code for to resolve this issue in PR #75