Description of problem:
oc patch cannot use yaml format

Version-Release number of selected component (if applicable):
oc v1.0.6-202-ga195624
openshift v1.0.6-202-ga195624
kubernetes v1.1.0-alpha.0-1605-g44c91b1


How reproducible:
Always

Steps to Reproduce:
1. oc login
2. Create a project and create applications
$ oc new-project newprj
$ oc new-app -f origin/examples/sample-app/application-template-stibuild.json
3. Check dc field before oc patch:
1> $ oc get dc
2> $ oc get dc/database -t '{{ .spec.replicas }}' | grep '.'
4. Apply oc patch. For comparison, use json first:
1> $ oc patch dc database -p '{"spec": {"replicas": 2}}'
2> $ oc get dc/database -t '{{ .spec.replicas }}' | grep '.'
5. Use yaml
1> $ oc patch dc/database -p '
spec:
  replicas: 3
'
2> $ oc get dc/database -t '{{ .spec.replicas }}' | grep '.'

Actual results:
5
2>
Error from server: invalid character 's' looking for beginning of value

Expected results:
4
1> Outputs:
"database" patched
2> Outputs:
2

5
1> Outputs:
"database" patched
2> Outpus:
3

Additional info:
`oc help patch' says:
-p, --patch='': The patch to be applied to the resource JSON file
But it also says:
JSON and YAML formats are accepted.

A link of YAML example: https://github.com/openshift/origin/blob/9185d680f64acd9d24f1846ef8a0472f5e0fcd01/docs/cli.md#oc-patch