Unexpected escape of fetch.ubuntu._run_with_retries without successfully finishing the command

[addyess]

fetch.ubuntu._run_with_retries seems to escape without raising an exception in the event that the subprocess.check_call yields an exit code not in the list of retry_exitcode

this gives this method a false success when in reality it should fail immediately (no retrying)

i think the library method should raise when the exit value of subprocess.check_call is an error not on the rety list

TLDR:
if its exit value is 0 -- 🎉
if the exit value is in the retry_results -- retry max_retries like expected
if the exit value is not in the retry_results -- 🔥