p-b-l: add 2s delay between copying, parallelize
run/runtest.sh needs some time to delete invalid reports, e.g. from skipped scenarios. This could make p-b-l miss some reports so the wait and copying is done in parallel Process() and in order to speed up copying of already existing files (to reduce time from service start to notifier start), initial copying is done by Pool() of processes.
Result: STABLE: All tests passing
Passed: 1125, Failed: 0, Skipped: 81
CentOS Testing Summary
Result: STABLE: All tests passing!
Passed: 1123, Failed: 0, Skipped: 81
Executed on: CentOS Stream release 8