Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Add send socket commands function"
  - Add send socket commands function
    
    Pktgen provides a TCP socket connection to allow the user to control
    it from a remote console or program [1].
    
    This new method will provide Yardstick the ability to send string
    commands to a port in a remote host.
    
    [1] http://pktgen-dpdk.readthedocs.io/en/latest/socket.html
    
    JIRA: YARDSTICK-1186
    
    Change-Id: I9d64ccad662fa3599de65654c5dab02833fcc91d
    Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
-Subproject 9fd6661f0480ee94c742611ce9c478e30ca5e41
+Subproject 9fc8dd0d24489c8362ab3b20f0e62888e896c28