print ouroboros configuration on startup

[circa10a]

Close #66

Output:

[INFO] 2018-12-20 18:22:48 Ouroboros configuration: {'url': 'unix://var/run/docker.sock', 'interval': 300, 'monitor': [], 'ignore': [], 'loglevel': 'info', 'run_once': False, 'cleanup': False, 'keep_tag': False, 'metrics_addr': '0.0.0.0', 'metrics_port': 8000}

[codecov-io]

Codecov Report

Merging #67 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master    #67   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           8      8           
  Lines         167    169    +2     
=====================================
+ Hits          167    169    +2

Impacted Files	Coverage Δ
ouroboros/ouroboros	100% <100%> (ø)	⬆️

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