Ryan Ernst 2b9d4bdf85 Plugins: Remove CustomNodeAttributes extension point
The DiscoveryNodeService exists to register CustomNodeAttributes which
plugins can add. This is not necessary, since plugins can already add
additional attributes, and use the node attributes prefix.

This change removes the DiscoveryNodeService, and converts the only
consumer, the ec2 discovery plugin, to add the ec2 availability zone
in additionalSettings().
2016-07-08 21:39:11 -07:00
..
2016-04-15 14:52:48 +02:00