Add timezone to openstack log decoder config

Change-Id: I0913af6138436a61ca5dbfed066a25dbdc13d2aa
diff --git a/nova/meta/heka.yml b/nova/meta/heka.yml
index ee9e28b..9d4a187 100644
--- a/nova/meta/heka.yml
+++ b/nova/meta/heka.yml
@@ -4,6 +4,7 @@
       engine: sandbox
       module_file: /usr/share/lma_collector/decoders/openstack_log.lua
       module_dir: /usr/share/lma_collector/common;/usr/share/heka/lua_modules
+      adjust_timezone: true
     {%- if pillar.nova.compute is defined %}
     libvirt:
       engine: sandbox