The playbook doesn't work on centos6 in GCE

[yarivgraf]

Hi,
create some instances:
$ gcloud compute instances create c6401 c6402 c6403 c6404 c6405 --image centos-6 --zone us-central1-f
The host files looks:

[ambari]
c6401

[master1]
c6402

[master2]
c6403

[slaves]
c6404
c6405

don't touch the rest of this unless you know what you're doing!

[masters:children]
master1
master2

[all:children]
ambari
master1
master2
slaves

First error.
libselinux-python, need add to site.yml:

• yum: name=libselinux-python state=latest

Second error.
TASK: [ambari-server | install ambari-server] *********************************
failed: [c6401] => {"changed": false, "failed": true, "rc": 0, "results": []}
msg: No Package matching 'ambari-server' found available, installed or updated

FATAL: all hosts have already failed -- aborting

It seems there is no repo for ambari-server