Per CEO directive on PRI-324: the actual cluster namespace for
shared E2E runs is `headlamp-dev`. References to `privilegedescalation-dev`
in the workflow, scripts, and runner RBAC were stale and prevented the
runner SA from acquiring permissions where they were granted on-cluster.
Also fixes the malformed `e2e-ci-runner-polaris` Role added in 0cd9eb0
which incorrectly carried `subjects:` and `roleRef:` (RoleBinding-only
fields) — kept rules-only on the Role and the binding in the matching
RoleBinding below.
Applies QA nits from PR #123: collapsed MISSING_ROLE/MISSING_ROLEBINDING
into a single MISSING flag in the pre-flight step. Dropped the
non-standard `--quiet` flag on get calls (already redirected to /dev/null).
Chris Farhood
25f860652c