RFC: Additional labels to set on nodes ?

[jfbus]

The basic labels the CCM sets on each node are:

• instance type
• region
• zone/sub-region

Additional labels may be set.

What labels would like the CCM to set ?

[jfbus]

Labels to add: physical server hosting the VM, cluster hosting the server

Goal: improving resiliency

Feasibility: impossible to add in the current CCM architecture, as the info is not reported by the API but only by the metadata server, and the CCM has only access to the metadata of the VM is is running on

Workaround: add osc.fcu.repulse_server/osc.fcu.repulse_cluster tags to the VM user data.

See #603