boostrap: nicer error messages on config parasing.
boostrap: nicer error messages on config parasing.

- handle ValueError as well as SyntaxError from config parser
- Report source file in the error message

muendelezaji/workload-automation,Sticklyman1936/workload-automation,bjackman/workload-automation,ep1cman/workload-automation,ep1cman/workload-automation,Sticklyman1936/workload-automation,jimboatarm/workload-automation,chase-qi/workload-automation,jimboatarm/workload-automation,Sticklyman1936/workload-automation,Sticklyman1936/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,bjackman/workload-automation,chase-qi/workload-automation,muendelezaji/workload-automation,ep1cman/workload-automation,Sticklyman1936/workload-automation,chase-qi/workload-automation,bathepawan/workload-automation,jimboatarm/workload-automation,ep1cman/workload-automation,Sticklyman1936/workload-automation,jimboatarm/workload-automation,bathepawan/workload-automation,bjackman/workload-automation,muendelezaji/workload-automation,bjackman/workload-automation,muendelezaji/workload-automation,jimboatarm/workload-automation,bathepawan/workload-automation,ep1cman/workload-automation,bathepawan/workload-automation,chase-qi/workload-automation,jimboatarm/workload-automation,chase-qi/workload-automation,bathepawan/workload-automation,muendelezaji/workload-automation,muendelezaji/workload-automation,ep1cman/workload-automation,bathepawan/workload-automation,bjackman/workload-automation