Have Colmena push to Attic after success

[kradalby]

Hi

First thanks for two awesome projects (colmena and attic), I use colmena for my fleet management and attic to speed it up and prebuild some things on Github.

I was thinking that what would be neat was some sort of post hook in colmena that would upload the newly activated system to attic after. The usecase for me would be when I make a small change and build it on the target.

If this is already possible, please enlighten me and close this ticket.

Keep up the good work!