Flaky debug pod return code

 ---------- edited for release notes ---------- * Previously, if a user runs a command in `oc debug`. such as `oc debug node/worker -- sleep 5; exit 1`, without attaching to the terminal, a `0` exit code was always returned regardless of the command's exit code. With this release, the exit code is now properly returned from the command. (link: https://issues.redhat.com/browse/OCPBUGS-20342 [* OCPBUGS-20342 *])  ---------- original text ---------- If user runs a command in oc debug without attaching to terminal such as `oc debug node/worker -- sleep 5; exit 1`, we were returning zero exit code regardless of the command's exit code. After this patch, we start reflecting the exit code(example I gave above will return 1 not 0).