chore(ci-cn): Transition to YAML configuration scheme
chore(ci-cn): starting 2023/06/22, CN5G images do not support anymore env-variable-based deployment configuration
- A common YAML file shall be mounted
- Currently SPGWU-TINY is still using the old configuration scheme
- But a new UPF is soon to be released
So I am making this MR to just use the latest v1.5.1
release instead.