When creating a server (the 'nova boot' command),
it calls 'POST /servers' API.
The response does not have 'addresses' and 'flavor' attributes.
When accessing 'networks' attribute in the '_print_server' function,
it calls 'GET /servers/{server_id}' and get the 'addresses' and
'flavor' attributes.
If 'GET /servers/{server_id}' fails, the server object does not have
the 'flavor' attribute, then KeyError is raised when accessing it.
Fix the issue by making it raise a CommandError
when the 'GET /servers/{server_id}' fails.
Co-Authored-By: Takashi Natsume <natsume.takashi@lab.ntt.co.jp>
Change-Id: I3ef096c61b0e05a637ab0c4a1027338fa87e4f09
Closes-Bug: #1781368
b13ba0138f