installer artifacts: set LC_ALL so that awscli would convert logs to Unicode correctly

Author: vrutkovs

ci-operator/templates/openshift/installer/cluster-launch-installer-e2e.yaml

@@ -715,6 +715,8 @@ objects:
         value: test
       - name: HOME
         value: /tmp
+      - name: LC_ALL
+        value: en_US.UTF-8
       command:
       - /bin/bash
       - -c