bug fix: end_time var does not exist to calculate duration
bug fix: end_time var does not exist to calculate duration

Change-Id: If73b6fbf022a837e4cb0190ab8074d18017ca57b
Signed-off-by: Morgan Richomme <863ecccd07b4194c40ddc432b982c8c67e56599a@orange.com>

mywulin/functest,opnfv/functest,mywulin/functest,opnfv/functest