Ingress template errors in mattermost-chaos-engine and mattermost-grafana charts

[andrewodri]

The mattermost-chaos-engine, mattermost-grafana and mattermost-push-proxy ingress templates do not render due to incorrect block chomping operators. This is not detected via CircleCI or even chart-testing when additional helm-extra-set-args are defined. Only helm template correctly fails on these errors.

See the following snippets:

https://github.com/mattermost/mattermost-helm/blob/33d934f165660495b7f307c0d09bef0d18371cf1/charts/mattermost-chaos-engine/templates/ingress.yaml#L38-L45

https://github.com/mattermost/mattermost-helm/blob/33d934f165660495b7f307c0d09bef0d18371cf1/charts/mattermost-enterprise-edition/charts/mattermost-grafana/templates/ingress.yaml#L25-L32