- added missing metrics ports in core services
- updated scalping time to 5 seconds

- reduced log level of some components

- updated component manifests to reduce CPU and Memory requests and limits

- tweaked resources and containers to accelerate tests

Context service:
- corrected port numbers

Device service:
- corrected port numbers
- upgraded gitlab-ci configuration

Preliminary unfinished version of device service and Context API based on Redis. To be finished, it is just a backup.

This reverts merge request !3