Change-Id: I91f2091ef06a55bcf5373d1beeea2dd81e9f1334
Closes-Bug: #1567895

Remove exceptions.py from functional/common.
Import exception with the same code from the tempest_lib to tests.

Change-Id: Ifaa658209c18dd608836079f57ed18fcf10fb84e

Add the following network options to the "os security group rule"
command:
  (1) --ingress and --egress
  (2) --ethertype
These options enable egress and IPv6 security group rules for
Network v2.

Change-Id: Ie30b5e95f94e0c087b0ce81e518de72d2dda25ad
Partial-Bug: #1519512
Implements: blueprint neutron-client

functional.common.tests module defines:

 * assertOutput (similar to assertEqual)
 * assertInOutput (similar to assertIn)

in order to allow the usage of assertions in testcase classmethods but
there is no reason to use them in testcase instancemethods at least
because they raise Exception instances instead of AssertionError
instances.

Change-Id: I9ffcaf9c6e6a1ff5df6ea2d79be3fb4496db4b85

This change replaces in many identity functests the pattern:

 raw_resource = create_resource(...)
 check(raw_resource)
 self.addCleanup(delete_resource, ...)
 ...

by the pattern:

 raw_resource = create_resource(...)
 self.addCleanup(delete_resource, ...)
 check(raw_resource)
 ...

which ensures that cleanup is defined and called after the test even if
check(resource) fails.

Change-Id: I4da541b7552d06eaffafda446e389bb552422cda

This change replaces when possible homemade temporary file management by
tempfile.NamedTemporaryFile[1][2] and defines only when needed a cleanup
for a temporary file[2].

[1] functional/tests/compute/v2/test_keypair.py
[2] functional/tests/object/v1/test_object.py

Change-Id: I728ab96381ca9f3fd1f899dd50e5ceb5e97b9397

This change removes unused cleanup_tmpfile method from functests code.

Change-Id: I5d8e7edb0e50e94a5a469ce393d411b390b4db34