oc cluster up master branch broken

[mjudeikis]

oc cluster up fails due move to array-based clusterNetworkCIDR:

oc v3.7.0-alpha.1+55a3968-807-dirty                                                                    
kubernetes v1.7.0+80709908fd                                                                         
features: Basic-Auth  

new generated config:

networkConfig:               
  clusterNetworks:           
  - cidr: 10.128.0.0/14      
    hostSubnetLength: 9      

Old config:

networkConfig:
  clusterNetworkCIDR: 10.128.0.0/14
  hostSubnetLength: 9

error:

I0930 16:20:47.520068   17336 plugins.go:101] No cloud provider specified.                               
E0930 16:20:47.526582   17336 controllermanager.go:357] Server isn't healthy yet.  Waiting a little while                                                                     
F0930 16:20:47.532135   17336 start_allinone.go:100] Server could not start: invalid CIDR address:       

rollback config works, but openshift binary already generates new style config

 _output/local/bin/linux/amd64/oc cluster up --use-existing-config --host-config-dir=/var/lib/origin/openshift.local.config/

@csrwng @jim-minter

[smarterclayton]

@openshift/networking

We may have to update this change by defaulting the new list to the singleton value and then during validation allowing it to continue if they're equal.

[karmab]

is there a workaround for new installs ( willing to test latest asb)