time.strftime() defaults to using time.localtime(), use that instead
of spawning "sh -c 'date +<FMT>'"
(Bitbake rev: ec1f2773b4811b3beb52710120bb5a9b215c174e)
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>