Add Photon repository to resolve xtend 2.14.0 when installing Eclipse 2018-09 (#6251)
Add Photon repository to resolve xtend 2.14.0 when installing Eclipse 2018-09 (#6251)

Addresses #6249.

Signed-off-by: Henning Treu <55ff5dd32efca3c9d38ec907176433a3dd42ea4f@telekom.de>
Snickermicker/smarthome,Snickermicker/smarthome,Snickermicker/smarthome,Snickermicker/smarthome