Cucumbers tests need to be more clear around timezones

[jpiasetz]

The cucumbers tests need a clean up around time-zones. Some of the asserts are implicitly imply date times that would have different time-zones.

See #1090

[mattr-]

Doesn't your pull request that I just merged fix this?

[jpiasetz]

I meant this as a more generally then my pull request. For example:

  Scenario: Basic site with a post
    Given I have a _posts directory
    And I have the following post:
      | title   | date      | content          |   
      | Hackers | 3/27/2009 | My First Exploit |
    When I run jekyll
    Then the _site directory should exist
    And I should see "My First Exploit" in "_site/2009/03/27/hackers.html"

I think would be better written as

    And I have the following post:
      | title   | date      | content          |   
      | Hackers | 2009-03-27 | My First Exploit |

It's more international and explicit. Also don't really see any advantage to mm/dd/YYYY

[parkr]

Yeah I was confused by that choice initially as well. I'd be down to shift it to the new format - it'd also be more easily manipulated because it's valid input for Time.parse, so wouldn't have to do any of this strange format-picking business.

[mattr-]

Yes please! ISO standard date format FTW! ✨