Fix py27 and default/shared [testenv] in Travis

Author: stephendonner

tox.ini

@@ -6,20 +6,21 @@ skipsdist = true
 passenv = HOME DISPLAY MOZ_HEADLESS PYTEST_ADDOPTS PYTEST_BASE_URL \
     SAUCELABS_USR SAUCELABS_PSW JENKINS_URL JOB_NAME BUILD_NUMBER
 deps = -raxe_selenium_python/tests/requirements/tests.txt
-commands = pytest \
-    --verbose \
-    --driver=SauceLabs \
-    --base-url=https://web-mozillians-staging.production.paas.mozilla.community
+commands = pytest
+
+[testenv:py27]
+commands = pytest
 
 [testenv:py36]
-commands = pytest \
-    --verbose \
-    --driver=Firefox \
-    --base-url=https://web-mozillians-staging.production.paas.mozilla.community
+commands = pytest
 
 [testenv:flake8]
 deps = -raxe_selenium_python/tests/requirements/flake8.txt
 commands = flake8 {posargs:.}
 
 [flake8]
 ignore = E501
+
+[pytest]
+addopts = --verbose --driver=Firefox
+base_url = https://web-mozillians-staging.production.paas.mozilla.community