[PLATFORM] Uses new tpls for repos / images

This commit makes platform chart to use the new generator for repositories and
images.

Issue-ID: OOM-2364
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I95c238eff8e7e166fb4d70d388e7952c2f1c1dd2
4 files changed