Group parser options.
Small typo fix
Merge pull request #3525 from techhat/typo

Small typo fix
Add JUnit compatible xml output to the tests suite.
Merge pull request #3526 from s0undt3ch/features/junit-compatible-tests-output

Features/junit compatible tests output
don't cache file if there is a nocache tag in the job_dir
Fix issue where bad key pop can lead to stack trace
Add the creation of the nocache file to the jid_dir
Add `--no-colours` to `runtests.py`. Refs #3511.