BibSched: parse_runtime_limit() fix
- Fixes bug in parse_runtime_limit which would give a limit range in the past, when expected returned ranges should always either contain the current time or being in the future. (closes #1432)
Co-authored-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>