Adds a periodic cleanup function that cross checks runners between github,
the provider and the GARM database. If an inconsistency is found, GARM will
attempt to fix it.
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
The locking logic was added to its own package as it may need to be used
by other parts of the code.
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
