Dump Authfile debugging info into the container log (SOFTWARE-5614)

[brianhlin]

We may not get all the info we need but it should help us narrow down where the problem's occurring. Maybe we should set -e.

[matyasselmeci]

Sure. I'd like to see what happens for the stash-origin-auth instance update even if the stash-origin instance update fails, so I'd rather not do set -e. We could, however, capture the return codes and, if either of them fail, exit explicitly (again, after both had been tried).

[matyasselmeci]

Also dump the files on failure? Something like

shopt -s nullglob
for f in /run/stash-origin/* /run/stash-origin-auth/*; do
    echo "======= $f ======="
    cat "$f"
    echo
done
shopt -u nullglob

[brianhlin]

@matyasselmeci the actual fix for the problem is in fa7d1de