Fix Grafana not installing non-Jessie/RPi systems (#240)
Fix Grafana not installing non-Jessie/RPi systems (#240)

* Grafana not installing when not running on jessie

Regarding https://github.com/openhab/openhabian/issues/239

* Amend Grafana install to check for Pi

Amend Grafana install to check for is_pi rather than is_jessie at top level.
Amend formatting of non-Pi repository configuration to match formatting used for InfluxDB to aid consistency

* Re-added Pi specific line, remove sudo

As per code review

Signed-off-by: 9073b6593d2718cc91982c7ce86b369453089941@my105e.com (github: ConfusedTA)

openhab/openhabian,ThomDietrich/openhabian,openhab/openhabian,openhab/openhabian