This patch ensures that compute client is initialized only when needed
(--server arg is passed) to openstack port list command. Otherwise it
leads to failures on installations without Nova.

Change-Id: I102683461daa2f7d05dd9d7a3ec72de551c65ca9
Closes-Bug: #1688194

As of Ocata release Nova forces nova-network to run in a cells v1
configuration.  Floating IP and network functions currently do not
work in the gate jobs so we have to skip this.  It is known to work
tested against a Mitaka nova-net DevStack without cells.

Change-Id: I74f67ac8eb12c7a649ddcbd7979cf745fb35cc0c

Change-Id: I9a60f1b0db78ed188966287939dbd8a6f82c1682

The quota list tests have a race in them where occasionally a project is
deleted in another test between the time that quota list gets a list of all
projects and it gets the quota for the projects from the service; the get
quota call fails on the non-existant project.

The quota list functional tests have been substantially re-written to
properly test the exception handling.

Change-Id: I71e6bbb5d46fcea4718a5a870f9a66a2c20fff0f

Nova-net requires a cells v1 configuration to run as of Ocata, but
aggregates and cells v1 are not golfing buddies, so don't let them
meet on the back nine.

Skip the aggregate add/remove host commands in the cells v1 config,
leave the others because they should work, just not be very useful.

And format things consistently.

Change-Id: I131d9f883cb7aca53ad82fb7d5fc6ee1c1e7d923

DevStack master (as of 01May2017) no longer sets up an Identity v2
admin endpoint, so we need to skip those tests going forward and cover
them via a specific leagacy job.  This does the detect-and-skip.

Change-Id: Ib9ab32b6bc84ec7d13508094ad6f83995d8d7bc1

Change-Id: I5215bae5234dcef448c6c5b824c506f80dd1c5a8