Fix V2 hypervisor server schema attribute

Nova v2 hypervisor server API return attribute "uuid" in response's
server dict. Current response schema does not have this attribute instead
it contain "id" which is wrong.

This patch fix the above issue.

NOTE- "uuid" attribute in this API response is always a uuid.

Change-Id: I78c67834de930012b70874938f345524d69264ba
Merge "Fix V2 hypervisor server schema attribute"