Persistent disks proposal

A stake in the ground ... something to evolve into a working implementation.
Forgive me for murdering this pseudo-yaml, but I think it conveys what the pods would look like, if that is what you are asking for.

This is only applicable to GCE if you want both read/write and a read-only pods.  

'''yaml
DiskSpec
    Name: MyGCEDisk
    PDName:  SOME-UUID-FROM-GCE
    
    
Pod
    Name: MyReadWritePod
    Spec:
        Volumes[]:
            VolumeSource:
                DiskName: MyGCEDisk
                ReadOnly: false
    Name: MyReadOnlyPod
    Spec:
        Volumes[]:
            VolumeSource:
                DiskName: MyGCEDisk
                ReadOnly: true    
'''