Add the "always_enabled" field to copp_cfg.j2 file, in order to allow traps without an entry in features table, to be installed automatically.
This is a cherry-pick of https://github.com/Azure/sonic-buildimage/pull/9302
- Why I did it
In order to allow traps without an entry in features table, to be installed automatically.
- How I did it
Add always_enabled field to traps without a feature
