Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "don't print exceptions in atexit handler"
  - don't print exceptions in atexit handler
    
    atexit handler calls terminate_all after the regular python execution
    path, and it looks like the traceback stack is None somehow.
    
    In this context log.debug("", exc_info=True) doesn't work
    it prints out NoneType on Python3 and
    causes other problems on Python2.7
    
    remove the exc_info=True from the logging call
    
    JIRA: YARDSTICK-1107
    
    Change-Id: Ida0a0ced7ff5e017e2f8608880e3bb531724af95
    Signed-off-by: Ross Brattain <ross.b.brattain@intel.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
-Subproject 0cfb413451484e311ad5d3e956f3bb9c52f6978
+Subproject f19016b39b828f648a66adc305cce17f5146e92