Open Stack

This change in neutron [1] renames the linuxbridge and openvswitch 
plugin config files.  I'm familiar with the %config(noreplace) directive 
in rpm but I'm not sure if there is a special trick with rpm to rename a 
config file while not losing the changes in the config file during the 
upgrade.

Is this just something that has to be handled with trickery in the %post 
macro where we merge the contents together if the old config file 
exists?  Would symbolic links help?

Changes like this seem like a potential giant pain in the ass for packagers.

[1] https://review.openstack.org/#/c/195277/

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Thanks,

Matt Riedemann