Move the luci-cfg config directory out of the infra/ python package.

config/cq.cfg

 # See http://luci-config.appspot.com/schemas/projects/refs:cq.cfg for the
 # documentation of this file format.
 
 version: 1
 cq_name: "infra"
 cq_status_url: "https://chromium-cq-status.appspot.com"
 
 rietveld {
   url: "https://codereview.chromium.org"
 }
 
 verifiers {
   reviewer_lgtm {
      committer_list: "chromium"
   }
   tree_status {
     tree_status_url: "https://infra-status.appspot.com"
   }
   try_job {
     buckets {
       name: "tryserver.chromium.linux"
       builders {
         name: "infra_tester"
       }
     }
   }
 }