CI: auto-deploy branch pipelines failing at `review_specs_*`

Summary

Pushes auto-deploy branches are triggering CI pipelines, but failing at review_specs_gke and review_specs_eks

Example branch: 13-0-auto-deploy-20200426 @ 44d9b8c4, 4b47ff97, 8f421649

For the affected behavior:

• !1298 (merged) is present, so this happening wasn't expected.
• !1298 (merged) did solve the failures at review_helm_test
• Only fails on pushes, not tags or triggers.

Steps to reproduce

Push commits to a X-Y-auto-deploy-ISODATE branch.

Current behavior

Failing at review_specs_* jobs

$ # Auto DevOps variables and functions # collapsed multi-line command
 $ if [[ -n "${VARIABLES_FILE}" ]]; then source "${VARIABLES_FILE}"; ./scripts/ci_feature_spec_setup; fi
 /bin/bash: line 455: variables/review_gke: No such file or directory

Expected behavior

Either not run, or succeed in all jobs.

Versions

• Chart: 44d9b8c4 / dae3b820

cc @skarbek