Add felix usage reporting config to master docs.
Add felix usage reporting config to master docs.

caseydavenport/calico,tomdee/calico,gunjan5/calico,bcreane/calico,caseydavenport/calico,gunjan5/calico,bcreane/calico,bcreane/calico,gunjan5/calico,heschlie/calico,caseydavenport/calico,gunjan5/calico,heschlie/calico,tomdee/calico,caseydavenport/calico,bcreane/calico,heschlie/calico,tomdee/calico,heschlie/calico,tomdee/calico,gunjan5/calico,tomdee/calico,heschlie/calico,caseydavenport/calico,bcreane/calico,heschlie/calico,caseydavenport/calico,gunjan5/calico,bcreane/calico