Replacing logout with close browser in teardown.
Replacing logout with close browser in teardown.

Change-Id: I1fffa68f60b92306e7993ac9d59c469c7d2c8fe4
Signed-off-by: Rahul Maheshwari <a806e6fd77e56dd64ff6084a06bbf3a5a70392ef@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation