CD-18 Expose aws box url

@vasili-zolotov @d3ming 

This creates a link to the aws box that's created during ci. Right now it uses the users github icon as the button, but this can be changed later with a real icon. (I didn't want to take a stab at art)
I don't know that I have access to that in Strider. All I have access to (that can help me here) is console output once it's done printing, and provided github information.