Fix ZUUL_REFNAME

Set up the variables the same way the post job is set up:
Pass them in via environment in job definition.

Pass ZUUL_ environment variables through to jobs.

Note ZUUL_REFNAME is not set, use ZUUL_BRANCH instead.

Change-Id: I5863a05384c9a48445d5ce52ccc508519c7c00f8

.zuul.yaml

@@ -18,6 +18,14 @@
     post-run: playbooks/build-manuals-tox/post.yaml
     roles:
       - zuul: openstack-infra/zuul-jobs
+    vars:
+      tox_environment:
+        # The tox job writes the root-marker file directly and thus
+        # needs the following variables set:
+        ZUUL_PROJECT: '{{ zuul.project.name }}'
+        ZUUL_BRANCH: '{{ zuul.branch }}'
+        ZUUL_UUID: '{{ zuul.build }}'
+        ZUUL_NEWREF: '{{ zuul.ref }}'
 
 - job:
     name: build-tox-manuals-checkbuild

tools/build-all-rst.sh

@@ -3,13 +3,13 @@
 mkdir -p publish-docs
 
 # Set this to a sensible value if not set by OpenStack CI.
-if [ -z "$ZUUL_REFNAME" ] ; then
+if [ -z "$ZUUL_BRANCH" ] ; then
-    ZUUL_REFNAME="master"
+    ZUUL_BRANCH="master"
 fi
 
 # This marker is needed for infra publishing.
 # Note for stable branches, this needs to be the top of each manual.
-MARKER_TEXT="Project: $ZUUL_PROJECT Ref: $ZUUL_REFNAME Build: $ZUUL_UUID Revision: $ZUUL_NEWREV"
+MARKER_TEXT="Project: $ZUUL_PROJECT Ref: $ZUUL_BRANCH Build: $ZUUL_UUID Revision: $ZUUL_NEWREV"
 
 LINKCHECK=""
 PDF_OPTION=""
@@ -44,6 +44,6 @@ for guide in arch-design doc-contrib-guide glossary \
 done
 
 # For master, just mark the root
-if [ "$ZUUL_REFNAME" = "master" ] ; then
+if [ "$ZUUL_BRANCH" = "master" ] ; then
     echo $MARKER_TEXT > publish-docs/.root-marker
 fi

tox.ini

@@ -8,6 +8,7 @@ basepython=python2.7
 setenv =
    VIRTUAL_ENV={envdir}
 deps = -r{toxinidir}/test-requirements.txt
+passenv = ZUUL_*
 whitelist_externals =
   bash
   cp