* feat(helm chart): add SecurityContext to pods and containers
Speckle pods should run with minimal privileges and capabilities to function.
Fix https://github.com/specklesystems/speckle-server/issues/857
* Update securityContext for all pods
* frontend runs as nonroot and readonly root filesystem
- set fsgroup for all pods with volumes
* Frontend requires write directory at /etc/nginx/conf.d
* Allow openresty log directory to be writable
* feat(helm local test): add test container into the make script
Co-authored-by: Gergő Jedlicska <gergo@jedlicska.com>
Kristaps Fabians Geikins