Set up initial Gerrit requirements

* Add .gitreview
* Add .zuul.yaml with basic linters and pep8 jobs
* Fix up tox.ini to run linters and pep8 environments.  This
  changed some leagacy config in the default testenv that will
  affect the more specific environments.

Change-Id: I02a81c5179141efb056cd030819af6387ba7a13c
Signed-off-by: Dean Troyer <dtroyer@gmail.com>

.gitreview

@@ -0,0 +1,4 @@
+[gerrit]
+host=review.openstack.org
+port=29418
+project=openstack/stx-distcloud-client.git

.zuul.yaml

@@ -0,0 +1,10 @@
+---
+- project:
+    check:
+      jobs:
+        - openstack-tox-linters
+        - openstack-tox-pep8:
+            voting: false
+    gate:
+      jobs:
+        - openstack-tox-linters

test-requirements.txt

@@ -11,3 +11,6 @@ mock>=2.0 # BSD
 nose # LGPL
 tempest>=14.0.0 # Apache-2.0
 testtools>=1.4.0 # MIT
+
+PyYAML>=3.1.0
+yamllint>=0.5.2

tox.ini

@@ -1,19 +1,22 @@
 [tox]
-minversion = 2.0
+minversion = 2.3
 envlist = py27,pep8
-# Tox does not work if the path to the workdir is too long, so move it to /tmp
-toxworkdir = /tmp/{env:USER}_distributedcloud-client
 skipsdist = True
 
 [testenv]
-usedevelop = True
+basepython = python3
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 setenv =
     VIRTUAL_ENV={envdir}
-    DISCOVER_DIRECTORY=dcmanagerclient/tests
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+    OS_STDOUT_CAPTURE=1
+    OS_STDERR_CAPTURE=1
+    OS_TEST_TIMEOUT=60
+#    DISCOVER_DIRECTORY=dcmanagerclient/tests
+
+deps = -r{toxinidir}/test-requirements.txt
+#deps = -r{toxinidir}/requirements.txt
+#       -r{toxinidir}/test-requirements.txt
+#commands = python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
 commands = flake8 {posargs}
@@ -33,3 +36,14 @@ show-source = True
 ignore = E123,E125
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*openstack/common*,*egg,build
+
+[testenv:linters]
+# bashate ignore:
+#  E006 - accept long lines
+#  E040 - false positive on |& syntax (new in bash 4)
+whitelist_externals = bash
+commands =
+  bash -c "find {toxinidir}        \
+            \( -name .tox -prune \)         \
+            -o -type f -name '*.yaml'       \
+            -print0 | xargs -0 yamllint"