Update Helm 2 version to 2.17.0

Merged Hordur Freyr Yngvason requested to merge update-helm-2-to-2-17-0 into master

What does this MR do?

Due to the old stable repo deprecation, Helm operations on clusters that still use Helm 2 are failing. The fix is to upgrade to 2.17.0, which includes a new stable repo.

See #295570 (closed)

Manual QA

  1. Attached a cluster to my GDK
  2. Changed the Helm major version to 2: Clusters::Cluster.last.update(helm_major_version: 2)
  3. Installed ingress
  4. Success

Screen_Shot_2020-12-23_at_15.25.23

Does this MR meet the acceptance criteria?

Conformity

Availability and Testing

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

  • [-] Label as security and @ mention @gitlab-com/gl-security/appsec
  • [-] The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
  • [-] Security reports checked/validated by a reviewer from the AppSec team
Edited by Hordur Freyr Yngvason