[Automation] Create Time based log directory

Generate logging directory as per date & time format.
example : logsdir20170125043829

Resolves openbmc/openbmc-test-automation#266

Change-Id: I80faafa5ef575eb34fac9ce091ab318e68e153a4
Signed-off-by: Sridevi Ramesh <sridevra@in.ibm.com>
1 file changed