fix ansible install problem

install generates a unicodedecodeerror if locales are not set

.gitlab-ci.yml

@@ -82,6 +82,10 @@ deploy-webserver:
     - yum update -y
     - yum install -y python36u python36u-libs python36u-devel python36u-pip openssl-devel  libffi-devel
     - python3.6 -m pip install --upgrade pip
+    - export PYTHONIOENCODING=utf8
+    - export LANG=en_US.UTF-8
+    - export LANGUAGE=en_US:en
+    - export LC_ALL=en_US.UTF-8
     - python3.6 -m pip install ansible
     - python3.6 -m pip install virtualenv
     - cd ansible