feat: manage timezone per region

- add timezone module
- set per-region timezone setting
- setup hiera_classes, set to deep merge, and set to include all in base profile

hieradata/common.yaml

@@ -1,5 +1,8 @@
 ---
 lookup_options:
+  hiera_classes:
+    merge:
+      strategy: deep
   profiles::packages::install:
     merge:
       strategy: deep
@@ -39,6 +42,9 @@ lookup_options:
 
 facts_path: '/opt/puppetlabs/facter/facts.d'
 
+hiera_classes:
+  - timezone
+
 profiles::ntp::client::ntp_role: 'roles::infra::ntp::server'
 profiles::ntp::client::peers:
   - 0.pool.ntp.org

hieradata/country/au/region/drw1.yaml

@@ -0,0 +1,2 @@
+---
+timezone::timezone: 'Australia/Darwin'

hieradata/country/au/region/syd1.yaml

@@ -0,0 +1,2 @@
+---
+timezone::timezone: 'Australia/Sydney'