Moved project configs to infra/config branch

luci-config has been switched to read from
https://chromium.googlesource.com/v8/v8/+/infra/config

R=machenbach@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=513460

Review URL: https://codereview.chromium.org/1258763004

Cr-Commit-Position: refs/heads/master@{#29897}

infra/project-config/README.md

-This directory contains v8 project-wide configurations for infra services.

infra/project-config/cr-buildbucket.cfg

-# Defines buckets on cr-buildbucket.appspot.com, used to schedule builds
-# on buildbot. In particular, CQ uses some of these buckets to schedule tryjobs.
-#
-# See http://luci-config.appspot.com/schemas/projects:buildbucket.cfg for
-# schema of this file and documentation.
-#
-# Please keep this list sorted by bucket name.
-
-buckets {
-  name: "master.tryserver.v8"
-  acls {
-    role: READER
-    group: "all"
-  }
-  acls {
-    role: SCHEDULER
-    group: "service-account-cq"
-  }
-  acls {
-    role: WRITER
-    group: "service-account-v8-master"
-  }
-}

infra/project-config/project.cfg

-# For the schema of this file and documentation, see ProjectCfg message in
-# https://luci-config.appspot.com/schemas/projects:project.cfg
-
-name: "V8"
-access: "group:all" # public