compute-node should send ring not only to storages but to proxy too
target_nodes should be array of ip, not node objs
by default rr algorithm should be used in swift-ring-compute role
Merge pull request #51 from MirantisDellCrowbar/bug/DCB-65/betty/master

compute-node should send ring not only to storages but to proxy too
Merge pull request #52 from MirantisDellCrowbar/bug/DCB-60/betty/master

by default rr algorithm should be used in swift-ring-compute role