Googling around, it looks like there's Vault... and most everything else is just storing PGP encrypted files in Github or stuff like that. Is there a good list of all top products in the secret management area, or a good recent comparison of features?
Zip it up with bogus name followed by Bcrypt or in a Truecrypt/VeraCrypt volume uploaded into Dropbox or whatever. You get benefit of proven solution for critical part, esp Truecrypt since NSA hated it, with easy usability and cost/storage/availability of 3rd party storage.
I should have added that this is for enterprise use, and the main use case is providing secrets to services when provisioning new hosts / containers or updating said secrets.
Your comment sounds to me as something that would work well for personal use, as a password manager replacement.