[cloudkitty] Stepping down from PTL

Hi all, I'm moving to a new position that doesn't involve OpenStack, and won't leave me the required time to be Cloudkitty's PTL. This is why I have to step down from the PTL position. jferrieu will take my position for the end of the U cycle (he's been a major contributor recently), with the help of huats, who's been the Cloudkitty PTL before me, and has been around in the community for a long time. I've been the PTL for two and a half cycles, and I think that it is a good thing for the project to take a new lead, with a new vision. I'm grateful for my experience within the OpenStack community. Thanks, -- Luka Peschke (peschk_l)