Setup for openstack-doc-tools

Add files to allow gating via:
tox -e checkbuild
tox -e checkniceness
etc

Also, enhance .gitignore to ignore files used by gating
via openstack-doc-tools

Change-Id: I96b669e14425265a033a549264c2158e2b1afa3e

.gitignore

@@ -1,12 +1,18 @@
 .DS_Store
 target/
 *.xpr
-.bak
-*.swp
 .idea
-*~
 bk-ha-guide.xml
+
 #Ignore Vagrant Related Files
 acceptance_config.yml
 boxes/*
 /.vagrant
+
+# Testenvironment
+.tox
+
+# Editors
+*~
+.*.swp
+.bak

test-requirements.txt

@@ -0,0 +1 @@
+openstack-doc-tools

tox.ini

@@ -0,0 +1,27 @@
+[tox]
+minversion = 1.6
+envlist = checkbuild,checkdeletions,checkniceness,checksyntax
+skipsdist=True
+
+[testenv]
+setenv =
+   VIRTUAL_ENV={envdir}
+   LANG=en_US.UTF-8
+   LANGUAGE=en_US:en
+   LC_ALL=C
+deps = -r{toxinidir}/test-requirements.txt
+
+[testenv:venv]
+commands = {posargs}
+
+[testenv:checkniceness]
+commands = openstack-doc-test --check-niceness
+
+[testenv:checksyntax]
+commands = openstack-doc-test --check-syntax
+
+[testenv:checkdeletions]
+commands = openstack-doc-test --check-deletions
+
+[testenv:checkbuild]
+commands = openstack-doc-test --check-build