l 2: only announce branches master & newest

lass/2configs/git.nix

@@ -56,6 +56,7 @@ let
         channel = "#retiolum";
         server = "cd.retiolum";
         verbose = config.krebs.build.host.name == "prism";
+        branches = [ "master" ];
       };
     };
   };

lass/2configs/repo-sync.nix

@@ -16,6 +16,7 @@ let
           verbose = false;
           channel = "#retiolum";
           server = "cd.retiolum";
+          branches = [ "newest" ];
         };
       });
     };