Fixed an issue where the mapper already has https:// address assigned…

[turetske]

… during creation but the url parsing was failing to catch it

Added a test of the get_mapper to the code

[turetske]

This is meant to be a temporary fix. There is an issue which discusses a more long term solution: #43

[bbockelm]

LGTM. Thank you for dropping in a unit test (and a comment) so it's obvious to future readers why the non-pelican:// check exists.

Note this won't work with http:// URLs (which can still exist for some caches, no?).

[turetske]

LGTM. Thank you for dropping in a unit test (and a comment) so it's obvious to future readers why the non-pelican:// check exists.

Note this won't work with http:// URLs (which can still exist for some caches, no?).

Good point, I'll add that as a check as well.