Moved vagrant-cachier from :box to :machine scope. [Fixes #650] [ci skip]
Fix typo.
icanhazip: use ipv4 subdomain to receive only ipv4 addresses

Signed-off-by: Thomas Stilwell <stilwellt@openlabs.co>
Merge pull request #634 from benemorius/icanhazipv4

[STANDBY] icanhazip: use ipv4 subdomain to receive only ipv4 addresses
Merge pull request #650 from patcon/560-machine-scope-caching

Switch vagrant-cachier cache scope to :machine
Move test folder.
Sub-package test folder.

* Enable relative imports inside the tests folder.
Create bin folder for scripts.

* Move checkstyle script into bin folder.
Factor jshint check into separate script.
Factor execute flag check into separate script.
Factor new line check into separate script.
Factor pylint check into separate script.
Drop check.sh
Populate Makefile with more refined targets.

* Rename `style` target to `check`.
* Split `check` to multiple subtrargets.
* Add `unittest` target. Restrict it to the tests available in the
  tests folder.
Do not clutter output.
Push conf files to bin folder.