MT#8741 Sync ngcp-rate-o-mat.init with templates

We have ngcp-check_active on CE now.
We do not need two copies of init scripts anymore:
  - templates.git/lsb_script/ngcp-rate-o-mat
  - rate-o-mat.git/debian/ngcp-rate-o-mat.init
Use the last one only. Syncing init script from templates.