Fix metadata creation for servers; fixes #625

I propose to add instructions override TempURL file names, it took me some time to figure out how to do it, I found it in a blog post from 2013: http://blog.rackspace.com/cloud-files-update-new-api-only-and-control-panel-features/?cm_mmc=Social-_-FaceBook-_-Blog-_-CustRef&sf13063985=1

I tried it, it works.

override TempURL file names

Add ability to use ports when creating server

This will prevent people that require the library in composer getting the tests in their optimised composer classmap.

Autoload tests only for dev

Make sure container name is valid when retrieving

…veral in parallel

…uest

refactored load balancer node adding to use one request instead of se…

Add support for security groups on server create

Add Code of Conduct

Should fix #648
Using `combine` didn't work, as it would either override the path info, or when swapped it would override the external host info with the internal host.

Fix temp public URL missing file path info

Add delete object method in the container of ObjectStore.