64c6681 frontend: re-process killed SRPM tasks

Authored and Committed by praiskup 3 years ago
    frontend: re-process killed SRPM tasks
    
    If binary RPM task was abruptly killed before, and it stayed in the
    "starting" or "running" state in Frontend DB -- we automatically
    re-tried the task before.  Now we do this also for source tasks.
    
    Merges: #1581