This patch explicitly points out the change needed while
forming the detailed lists for servers. In those cases
where the server response for ``openstack server list``
has the flavor and image keys missing for the instances
in the down cell, the servers will be skipped from being
processed.

Depends-On: https://review.openstack.org/591657/
Related to blueprint handling-down-cell
Change-Id: Ibcfe9febdc45db1cb86c6e88f65976feceb01c02

since nova api 2.40 the os-simple-tenant-usage API supports pagination
and will by default return a number of entities configured internally in
Nova.
This means that when there are many enough projects,
the single call to usage.list() will not return usages for all projects.

This patch effectively copy-pastes the logic to paginate over usage list
results from novaclient/v2/shell.py code.

Change-Id: I1b639fe386b7b7db3223f6965495094b9d51533a
Story: #2005099
Task: #29713

Just a typo fix.

Change-Id: I1d1fe6eb95c0b167265b3664314d764e3c316fe2

Closes-Bug: #1809874
Change-Id: Ib988b189b41af03d3d871b660bb5b5cc090c3f30

AddFloatingIP refers to an old nova proxy API to neutron that was
deprecated in nova. The neutron API for floating IP associate requires
a port to be specified. Currently, the code is selecting the first port
if the server has multiple ports. But, an attempt to associate the
first port with a floating IP can fail if the first port is not on a
network that is attached to an external gateway.

In order to make the command work better for users who have a server
with multiple ports, we can:

  1. Select the port corresponding to the fixed_ip_address, if one was
     specified

  2. Try to associate the floating IP with each port until one of the
     attempts succeeds, else re-raise the last exception.
     (404 ExternalGatewayForFloatingIPNotFound from neutron)

This also fixes incorrect FakeFloatingIP attributes that were being set
in the TestServerAddFloatingIPNetwork unit tests, which were causing
the tests to use None as parsed args for ip-address and
--fixed-ip-address and thus bypassing code in the
'if parsed_args.fixed_ip_address:' block.

Task: 27800
Story: 2004263

Change-Id: I11fbcebf6b00f12a030b000c84dcf1d6b5e86250