Update helm charts to use newly published GR-OSS docker images

[jayofdoom]

We should adjust the helm charts to use the new location for GR-OSS published docker images. Test the updated helm charts by using them to perform a one-time manual update of the shared test server.

Document the process so manual updates can be performed by anyone with access.

[dave-gantenbein]

Hey team! Please add your planning poker estimate with ZenHub @dejanzele @jayofdoom @kannon92 @richscott

[Sharpz7]

Closing - definitely no longer relevant - a bigger ticket on Helm/Operator/Localdev/Release should be created