make dcron running locally, update cron test, add GetJobs / GetJob function for dcron.

[codecov-commenter]

Codecov Report

Attention: 17 lines in your changes are missing coverage. Please review.

Comparison is base (0ff369b) 84.97% compared to head (106db08) 85.75%.

Files	Patch %	Lines
dcron.go	66.00%	15 Missing and 2 partials :warning:

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #89 +/- ## =========================================== + Coverage 84.97% 85.75% +0.77% =========================================== Files 17 17 Lines 1278 1102 -176 =========================================== - Hits 1086 945 -141 + Misses 160 125 -35 Partials 32 32 ```

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