Move test_report_client out of placement namespace

test_report_client provides functional tests of the report client using
a fully operating placement service (via wsgi-intercept) but it is not,
in itself, testing placement. Therefore this change moves the test
into nova/tests/functional where it can sit besides other genral purpose
nova-related functional tests.

As noted in the moved file, in a future where placement is extracted,
nova could choose to import a fixture that placement (installed as a
test dependency) provides so that this test and ones like it can
continue to run as desired.

compute/test_resource_tracker.py is updated to reflect the new location
of the module as it makes use of it.

partially implements blueprint placement-extract

Change-Id: I433700e833f97c0fec946dafc2cdda9d49e1100b

nova/tests/functional/compute/test_resource_tracker.py

@@ -23,7 +23,7 @@ from nova import context
 from nova import objects
 from nova import rc_fields as fields
 from nova import test
-from nova.tests.functional.api.openstack.placement import test_report_client
+from nova.tests.functional import test_report_client
 from nova.tests import uuidsentinel as uuids
 from nova.virt import driver as virt_driver
 

nova/tests/functional/test_report_client.py

@@ -17,6 +17,10 @@ import mock
 import requests
 from wsgi_intercept import interceptor
 
+# NOTE(cdent): When placement is extracted, placement will need to
+# expose a fixture of some kind which operates as deploy does here,
+# providing a WSGI application to be intercepted, but it will also
+# need to be responsible for having a reasonable persistence layer
 from nova.api.openstack.placement import deploy
 from nova.compute import provider_tree
 from nova import conf