The original Keepass2 client allows you to use webdav as storage backend for the keepass file where all the passwords are stored. however, it seems to be a bit tricky to get https to work with keepass2 under linux (ubuntu in my case).
there is one simple solution to all this, use KeepassXC which is a very nice kepass client and it supports webdav out of the box with no issues whatsoever.. also read my other article on how to enable auto-unlocking the keepass db upon login and using it as a ssh key storage
further more, install the chrome plugin for keepassXC to also use it as a password storage for your browser.