feat(settings): Get timezone from environment variable (#1196)

If user has set a specific timezone, use that timezone instead of
default UTC.

Author: ChillarAnand

charts/controller/templates/controller-deployment.yaml

@@ -75,6 +75,8 @@ spec:
                   key: image
             - name: "IMAGE_PULL_POLICY"
               value: "{{ .Values.app_pull_policy }}"
+            - name: "TZ"
+              value: "{{ default 'UTC' .Values.time_zone }}"
 {{- if (.Values.deploy_hook_urls) }}
             - name: DEIS_DEPLOY_HOOK_URLS
               value: "{{ .Values.deploy_hook_urls }}"

rootfs/api/settings/production.py

@@ -34,7 +34,7 @@
 # http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
 # although not all choices may be available on all operating systems.
 # In a Windows environment this must be set to your system time zone.
-TIME_ZONE = 'UTC'
+TIME_ZONE = os.environ.get('TZ', 'UTC')
 
 # Language code for this installation. All choices can be found here:
 # http://www.i18nguy.com/unicode/language-identifiers.html