@miro_hiscox - Did the answer provided by dwaddle help answer your question? If yes, please don't forget to resolve this post by clicking "Accept". If no, please leave a comment with more feedback. Thanks!
The code that needs to be changed to support using the passwords endpoint in lieu of clear text passwords is all Python code, so it's something that could be changed with some effort. BUT the EULA for the Bamboo app does not allow for derivative works, as it it licensed under the Splunk EULA. If you want this changed in a way that is compatible with the license, you will have to file an enhancement request. https://answers.splunk.com/answers/4844/how-can-i-submit-an-enhancement-request.html