orchestrator-k8s: load locations from a local fs

[rgolangh]

Loading backstage locations from URL is limiting when all you need is to be up and running with notifications plugins working and you don't want the extra steps to configure a github token just to be able to pull those in Instead the chart would install those locatios files in a config map from the /locations directory The price to pay is that those location files need to manually downloaded and placed in the location dir from time to time. note: the location file in the values.yaml must match the name in the config map

To use the mount in backstage there's a new backstage-location config map and an backstage.extraVolumes and backstage.extraVolumeMounts config entries in values.yaml

Signed-off-by: Roy Golan rgolan@redhat.com

[rgolangh]

still checking if this works as expected

[rgolangh]

Works out of the box:

curl "http://localhost:9090/api/notifications/notifications" -H "Content-Type: application/json" -d '{"message": "hi from cli", "title":"hi", "targetUsers":["default/guest"], "origin":"cli"}'
{"messageId":"851d97d3-c2a6-4142-9b07-bb78d99f26c6"}