filterplugins

Ansible filterplugins.

Add these to you ansible projects to extend your jinja filters

I'm open for pull requests, in case people want to share theirs

date_time_filters.py

reformat_datetime(input_format, output_format) : reformat date_time ; default fallback to today
diff_datetime(date_format, date2, date2_format, invert) : get the difference between 2 datetimes (from seconds upto years) ; default fallback to today
add_time_to_datetime(date_format, add_time, add_type) : add time to a datetime ; default fallback to today