Implement tox.ini config for bashate and pep8 tests

This patch implements tox.ini configuration for bashate and pep8
tests for the purpose of implementing the standard openstack-infra
tests for these.

Change-Id: I72623ea3d531614a803f6b97a9f61f56c376c723
Implements: blueprint gate-split

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = docs,pep8
+envlist = docs,pep8,bashate
 
 [testenv]
 usedevelop = True
@@ -18,14 +18,40 @@ commands=
 deps = -r{toxinidir}/dev-requirements.txt
 commands = {posargs}
 
+# Run hacking/flake8 check for all python files
 [testenv:pep8]
-whitelist_externals = bash
+deps = flake8
+ commands =
+    bash -c "grep -Irl \
+        -e '!/usr/bin/env python' \
+        -e '!/bin/python' \
+        -e '!/usr/bin/python' \
+        --exclude-dir '.*' \
+        --exclude-dir '*.egg' \
+        --exclude-fir '*.egg-info' \
+        --exclude 'tox.ini' \
+        --exclude '*.sh' \
+        {toxinidir} | xargs flake8 --verbose"
 
+[flake8]
+# Ignores the following rules due to how ansible modules work in general
+#     F403 'from ansible.module_utils.basic import *' used; unable to detect undefined names
+#     H303  No wildcard (*) import.
+ignore=F403,H303
+
+# Run bashate check for all bash scripts
+# Ignores the following rules:
+#     E003: Indent not multiple of 4 (we prefer to use multiples of 2)
+[testenv:bashate]
+deps = bashate
+whitelist_externals = bash
 commands =
-  flake8 {posargs}
-  # Run bash8 during pep8 runs to ensure violations are caught by
-  # the check and gate queues
-  bash -c "find {toxinidir}     \
-            -not -path '*/\.*'  \ # stay out of the dot directories
-            -name '*sh'         \ # all shell scripts please
-            -print0 | xargs -0 bashate -v -i E003,E011"
+    bash -c "grep -Irl \
+        -e '!/usr/bin/env bash' \
+        -e '!/bin/bash' \
+        -e '!/bin/sh' \
+        --exclude-dir '.*' \
+        --exclude-dir '*.egg' \
+        --exclude-fir '*.egg-info' \
+        --exclude 'tox.ini' \
+        {toxinidir} | xargs bashate --verbose --ignore=E003"