Fix the docs job

This change fixes the docs job to ensure we have access to development
versions of tripleo-common. This is being done because we have more
modules coming in which are using tripleo-common which may require
unreleased versions of the package when running tests. This change
adds tripleo-common as an upstream constraint which is only used in
the docs and molecule test scenarios.

Change-Id: Ib64307defe4d5a0e06ad862ab9f51d1da3d23312
Signed-off-by: Kevin Carter <kecarter@redhat.com>

constraints.txt

@@ -0,0 +1 @@
+-e git+https://github.com/openstack/tripleo-common@master#egg=tripleo-common

molecule-requirements.txt

@@ -22,3 +22,6 @@ doc8>=0.8.0 # Apache-2.0
 bashate>=0.6.0 # Apache-2.0
 metalsmith>=0.13.0 # Apache-2.0
 jsonschema  # MIT
+
+# Upstream requirements from constraints.txt
+tripleo-common

tox.ini

@@ -61,7 +61,9 @@ commands =
 
 [testenv:releasenotes]
 basepython = python3
-deps = -r{toxinidir}/doc/requirements.txt
+deps =
+  -r {toxinidir}/doc/requirements.txt
+  -c {toxinidir}/constraints.txt
 commands =
     sphinx-build -a -E -W -d releasenotes/build/doctrees --keep-going -b html releasenotes/source releasenotes/build/html
 
@@ -69,6 +71,7 @@ commands =
 basepython = python3
 deps =
   -r {toxinidir}/doc/requirements.txt
+  -c {toxinidir}/constraints.txt
 commands=
     doc8 doc
     sphinx-build -a -E -W -d doc/build/doctrees --keep-going -b html doc/source doc/build/html -T