Add requirements and base pep8 job

This patch also adds tox.ini file with config for the pep8 job

Change-Id: I1f804dd03f254223cc1a7ed3371f6606fbb579cc

.zuul.yaml

@@ -1,3 +1,3 @@
 - project:
     templates:
-      - noop-jobs
+      - tempest-plugin-jobs

requirements.txt

@@ -0,0 +1,6 @@
+python-subunit >= 0.0.18
+testtools >= 0.9.30
+dpkt >= 1.8.8  # BSD
+cryptography >= 2.5, < 3.3
+netaddr
+netifaces

test-requirements.txt

@@ -0,0 +1,17 @@
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+
+hacking>=3.0.1,<3.1.0
+
+coverage!=4.4,>=4.0 # Apache-2.0
+flake8-import-order==0.12 # LGPLv3
+python-subunit>=1.0.0 # Apache-2.0/BSD
+sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7'  # BSD
+sphinx!=1.6.6,!=1.6.7,!=2.1.0,>=1.6.2;python_version>='3.4'  # BSD
+oslotest>=3.2.0 # Apache-2.0
+stestr>=1.0.0 # Apache-2.0
+testtools>=2.2.0 # MIT
+openstackdocstheme>=1.20.0 # Apache-2.0
+# releasenotes
+reno>=2.5.0 # Apache-2.0

tox.ini

@@ -0,0 +1,26 @@
+[tox]
+minversion = 3.18.0
+envlist = pep8
+skipsdist = True
+ignore_basepython_conflict = True
+
+[testenv]
+basepython = python3
+usedevelop = True
+setenv =
+   VIRTUAL_ENV={envdir}
+   PYTHONWARNINGS=default::DeprecationWarning
+   OS_LOG_CAPTURE={env:OS_LOG_CAPTURE:true}
+   OS_STDOUT_CAPTURE={env:OS_STDOUT_CAPTURE:true}
+   OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:true}
+deps =
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -r{toxinidir}/test-requirements.txt
+commands = stestr run --slowest {posargs}
+
+[testenv:pep8]
+commands =
+  flake8
+
+[testenv:venv]
+commands = {posargs}