bug 957802: Test new requirements in locale build

In the TravisCI locale build, use the Python environment and install any
new requirements, rather than using the current Docker image and the old
requirements. This allows verification of updates for Jinja2 and related
libraries.

.travis.yml

@@ -35,7 +35,8 @@ env:
         - TOXENV=flake8
         - TOXENV=docs
         - TOXENV=locales
-          INSTALL_DOCKER_COMPOSE=1
+          CREATE_DB=kuma
+          INSTALL_PIPELINE=1
         - TOXENV=docker
           INSTALL_DOCKER_COMPOSE=1
           UID=0

tox.ini

@@ -28,18 +28,21 @@ commands = sphinx-build -b html -d {envtmpdir}/doctrees docs {envtmpdir}/html
 [testenv:locales]
 whitelist_externals =
     cat
-    docker-compose
+    make
     git
+deps = -rrequirements/dev.txt
 changedir = locale
 setenv =
-    COMPOSE_FILE = {toxinidir}/docker-compose.yml:{toxinidir}/docker-compose.test.yml
-    COMPOSE_PROJECT_NAME = localetox
     GIT_PAGER = cat
 # Test that locales are refreshed w/o error,
 # then display diff only if messages changed
 commands =
-    docker-compose run noext make localerefresh
+    make -C .. localerefresh
     git diff -G "^msgid " templates/LC_MESSAGES
+passenv =
+    DATABASE_URL
+    DJANGO_SETTINGS_MODULE
+    PIPELINE_*
 
 [testenv:docker]
 whitelist_externals = docker-compose