fix(traefik): Fix traefik version to 1.7 (#38)
fix(traefik): Fix traefik version to 1.7 (#38)

* fix(traefik): Fix traefik version to 1.7

Set all Gravitee images to latest.
Handle redirect from apim.gravitee.io/portal to apim.gravitee.io/portal (with '/') to avoid 404 from portal UI.

Fix traefik network to 'frontend' to avoid random http 504

Closes gravitee-io/issues#3043

gravitee-io/gravitee-docker,gravitee-io/gravitee-docker