[COMMON][NAMEGEN] Uses new tpls for repos / images

This commit makes network name gen template to use the new generator for
repositories and images.

Issue-ID: OOM-2364
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I9f638f1fe48d6cdb66cc53cc9bcedb67edb55017
3 files changed