Include groups and device cache

[mapedraza]

Describe the solution you'd like

Things to have into account:

• It should be configurable as per group
• Cache eviction policies should be configurable (round robin, FIFO, random...)
• Validity time / refresh time should be configurable (for those services that need more consistency)
• Impact on HA consistency - Documentation

[mapedraza]

To have into account PR #998