Slave nodes get a copy of the template node properties #748
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During the review of openstack-cloud-plugin PR 270, concerns were raised about slave nodes sharing the same instance of node properties; the belief is that not all node properties are stateless and some may assume that they're only dealing with a single node.
i.e. we should deep-copy the node properties, not merely pass by reference.
So we came up with code that copied the node properties.
The docker plugin has the same issue; this applies the same fix.