Error detection broken in parsec-cli-tests.sh

[petedyer11]

The parsec-cli-tests script runs tests in a loop with a pipe command in it, which forces them to be run in a sub-shell.
The tests update EXIT_CODE correctly within the loop but that does not gets exported outside of the loop.
So any failures detected are not reported via the exit status of the script.

I provoked an error by changing "--key-name" to "--ky-name" in one of the checks.