bst cache fails to authenticate due to SSL

Summary

When running bst build, our CI runners try to contact our cache server for push/pull, but receive: "Failed to initialize remote https://testcache.codethink.co.uk:11002: Method not found!" as a response.

Steps to reproduce

The CI/cache server are configured to use 1.1.4 and use the same configuration that is found here: https://buildstream.gitlab.io/buildstream/install_artifacts.html?highlight=cache%20server#configuring-buildstream-to-use-remote-caches

What is the current bug behavior?

The build fails to pull/push anything from the cache server

What is the expected correct behavior?

Buildstream to pull elements from the cache server and push after new things have been built

Relevant logs and/or screenshots

https://gitlab.com/freedesktop-sdk/freedesktop-sdk/-/jobs/85713745

Possible fixes

Other relevant information

• BuildStream version affected: /milestone %BuildStream_v1.x

---