The current magnum traefik deployment will always pull latest traefik
container image. With the new launch of traefik v2
(https://blog.containo.us/back-to-traefik-2-0-2f9aa17be305) this will
have impact on how the ingress is described in k8s.
This patch:
* Sets the traefik version to default tag v1.7.9, stable release
prior to v2.
* Adds a new label <traefik_ingress_controller_tag> to enable user
to specify other than default traefik release.
Task: 30143
Task: 30146
Story: 2005286
Change-Id: I031a594f7b6014d88df055664afcf51b1cd2cd94
Signed-off-by: Diogo Guerra <dy090.guerra@gmail.com>
b3ceb252ef