introduced retry counter instead of changing priority, set default retry_avbl as 3
increase version for the column retry_avbl
fix test failed in job clone
add retry_avbl to the returned hashref
add dup_type_auto tests and fix the tests what affected
copied retry_avbl if the input is undefined
Merge pull request #51 from nilxam/retry_counter_db

introduce retry counter to instead of changing job priority