[AIRFLOW-2858] Make tox.ini indentation and whitespace consistent (apache#3705)

Author: tedmiston

tox.ini

@@ -18,7 +18,7 @@
 
 [tox]
 envlist = flake8,{py27,py35}-backend_{mysql,sqlite,postgres}
-skipsdist=True
+skipsdist = True
 
 [global]
 wheel_dir = {homedir}/.wheelhouse
@@ -36,19 +36,19 @@ deps =
     coveralls
 
 basepython =
-  py27: python2.7
-  py35: python3.5
+    py27: python2.7
+    py35: python3.5
 
 setenv =
-  HADOOP_DISTRO=cdh
-  HADOOP_HOME=/tmp/hadoop-cdh
-  HADOOP_OPTS=-D/tmp/krb5.conf
-  MINICLUSTER_HOME=/tmp/minicluster-1.1-SNAPSHOT
-  HIVE_HOME=/tmp/hive
-  backend_mysql: AIRFLOW__CORE__SQL_ALCHEMY_CONN=mysql://root@localhost/airflow
-  backend_postgres: AIRFLOW__CORE__SQL_ALCHEMY_CONN=postgresql+psycopg2://postgres@localhost/airflow
-  backend_sqlite: AIRFLOW__CORE__SQL_ALCHEMY_CONN=sqlite:///{homedir}/airflow/airflow.db
-  backend_sqlite: AIRFLOW__CORE__EXECUTOR=SequentialExecutor
+    HADOOP_DISTRO = cdh
+    HADOOP_HOME = /tmp/hadoop-cdh
+    HADOOP_OPTS = -D/tmp/krb5.conf
+    MINICLUSTER_HOME = /tmp/minicluster-1.1-SNAPSHOT
+    HIVE_HOME = /tmp/hive
+    backend_mysql: AIRFLOW__CORE__SQL_ALCHEMY_CONN = mysql://root@localhost/airflow
+    backend_postgres: AIRFLOW__CORE__SQL_ALCHEMY_CONN = postgresql+psycopg2://postgres@localhost/airflow
+    backend_sqlite: AIRFLOW__CORE__SQL_ALCHEMY_CONN = sqlite:///{homedir}/airflow/airflow.db
+    backend_sqlite: AIRFLOW__CORE__EXECUTOR = SequentialExecutor
 
 passenv =
     HOME
@@ -67,15 +67,15 @@ passenv =
     SLUGIFY_USES_TEXT_UNIDECODE
 
 commands =
-  pip wheel -w {homedir}/.wheelhouse -f {homedir}/.wheelhouse -e .[devel_ci]
-  pip install --find-links={homedir}/.wheelhouse --no-index -e .[devel_ci]
-  sudo {toxinidir}/scripts/ci/setup_kdc.sh
-  {toxinidir}/scripts/ci/setup_env.sh
-  {toxinidir}/scripts/ci/ldap.sh
-  {toxinidir}/scripts/ci/load_fixtures.sh
-  {toxinidir}/scripts/ci/load_data.sh
-  {toxinidir}/scripts/ci/run_tests.sh []
-  {toxinidir}/scripts/ci/check-license.sh
+    pip wheel -w {homedir}/.wheelhouse -f {homedir}/.wheelhouse -e .[devel_ci]
+    pip install --find-links={homedir}/.wheelhouse --no-index -e .[devel_ci]
+    sudo {toxinidir}/scripts/ci/setup_kdc.sh
+    {toxinidir}/scripts/ci/setup_env.sh
+    {toxinidir}/scripts/ci/ldap.sh
+    {toxinidir}/scripts/ci/load_fixtures.sh
+    {toxinidir}/scripts/ci/load_data.sh
+    {toxinidir}/scripts/ci/run_tests.sh []
+    {toxinidir}/scripts/ci/check-license.sh
 
 [testenv:flake8]
 basepython = python3
@@ -85,4 +85,3 @@ deps =
 
 commands =
     {toxinidir}/scripts/ci/flake8_diff.sh
-