Description of problem:
According to document https://docs.openshift.org/latest/admin_guide/securing_builds.html#disabling-a-build-strategy-globally , we can disable build strategy like docker, custom by removing '- builds/docker' and '- builds/custom' and keeping '- builds/source'. But `oc edit clusterrole admin edit` does not show these items:
  - builds/custom
  - builds/docker 
  - builds/source

Version-Release number of selected component (if applicable):
openshift v1.3.0-alpha.0-56-gd9c6483
kubernetes v1.3.0-alpha.1-331-g0522e63
etcd 2.3.0

How reproducible:
Always

Steps to Reproduce:
1. Via cluster-admin, run:
$ oc edit clusterrole admin
$ oc edit clusterrole edit


Actual results:
1. Inconsistent with the document. oc edit only shows:
  - builds
  - builds/clone
  - builds/log

Not show:
  - builds/custom
  - builds/docker 
  - builds/source

Expected results:
1. No matter about function change or document update, the result from oc edit and the document should be consistent.

Additional info:
In step 1, if add:
  - builds/source
But not add:
  - builds/custom
  - builds/docker
Then save edit, regular user still can create build of docker strategy.