bugfix: specify helm_stable_repo_url and default to https://charts.helm.sh/stable

Signed-off-by: Cian Johnston <cian.johnston@est.tech>
Change-Id: Id5c03464b1ac526b3cd3e3fec3be5bd9185ea9cc
Depends-On: Ia374e8981cf83ec4da41ec23d38e5f181edbaa1a
3 files changed