[FIX] Ensure timzone is unset before testing
[FIX] Ensure timzone is unset before testing

ovnicraft/openerp-server,gisce/openobject-server,splbio/openobject-server,splbio/openobject-server,splbio/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,gisce/openobject-server,MarkusTeufelberger/openobject-server,ovnicraft/openerp-server