Document backup and restore procedures

[jorgemoralespou]

There is no information on backup/restore procedures, what files need to be backup and how they can be backuped and restored.
OpenShift configuration files backup and restore are quite easy but not etcd backup and restore.

[thoraxe]

We'll also need to differentiate between the following:

1. backup of non-clustered etcd without etcdctl
2. backup of clustered etcd with etcdctl

[thoraxe]

I think we need to capture:

/etc/openshift
/var/lib/openshift
/etc/sysconfig/openshift

What else?

[ivanthelad]

Openshift Registry content?
it would also be need to part of a backup practise

[vikram-redhat]

BZ created to track work on this: https://bugzilla.redhat.com/show_bug.cgi?id=1259544.