The job "pull-ci-openshift-installer-master-e2e-aws-ovn-edge-zones-manifest-validation"[1] is crashing in the step "openshift-installer-manifests-aws-edge-zones"[2] while checking the manifest files, resulting in incomplete validation.

Required tasks / acceptance criteria:

• Fix job execution in us-east-1
• Fix job error handling - return error (fail job) when fail the runtime 
• Fix error "environment: line 133: zoneName: unbound variable"
• CI PR with fixes merged
  • Rehearsal passing with no failures
  • disabled[2A] edge zones must be enabled through first rehearsal execution

Example of job: 

• [1] job status: https://prow.ci.openshift.org/job-history/gs/test-platform-results/pr-logs/directory/pull-ci-openshift-installer-master-e2e-aws-ovn-edge-zones-manifest-validation 
• [2] step https://github.com/openshift/release/blob/48f08b88b1239cf14a693968f74ce9e7fdad6fdf/ci-operator/step-registry/openshift/installer/manifests/aws/edge-zones/openshift-installer-manifests-aws-edge-zones-commands.sh#L421-L429 
• [2A] https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/test-platform-results/pr-logs/pull/openshift_installer/8254/pull-ci-openshift-installer-master-e2e-aws-ovn-edge-zones-manifest-validation/1782809999374815232/artifacts/e2e-aws-ovn-edge-zones-manifest-validation/openshift-installer-manifests-aws-edge-zones/artifacts/edge-zones-disabled_us-east-1.txt 
•  [3] https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/test-platform-results/pr-logs/pull/openshift_installer/8254/pull-ci-openshift-installer-master-e2e-aws-ovn-edge-zones-manifest-validation/1782809999374815232/artifacts/e2e-aws-ovn-edge-zones-manifest-validation/openshift-installer-manifests-aws-edge-zones/build-log.txt
•