[egit-dev] Update openhub managers

[Michael Keppler <Michael.Keppler@xxxxxx>]

Matthias, since you cleaned up the committer rights a while ago, can you 
please do the same at the Openhub listing of egit over at 
https://www.openhub.net/p/egit/managers

If you want, you can add my account 
https://www.openhub.net/accounts/Bananeweizen so you are not the only 
available manager.

Thanks.