Update git submodules

* Update docs/submodules/vswitchperf from branch 'master'
  - Merge "tests: Improvement of step driven testcases"
  - tests: Improvement of step driven testcases

    A set of improvements was introduced to enhance step driven
    testcases capabilities.

    Details:
    * delay among test steps is configurable by TEST_STEP_DELAY
      parameter
    * step driven tool function exec was renamed to exec_shell
    * new step driven tool function exec_python was introduced to execute
      a python code
    * new step driven object sleep was introduced to pause test execution
      for defined number of seconds.
    * fixed bug in settings.validate_getValue() to correctly validate
      access of parameters modified by TEST_PARAMS
    * new #PARAM() macro was introduced to allow references among
      configuration parameters
    * multistream support has been added into ixnetrfc2544v2.tcl,
      which is used for tunneling protocols test (op2p deployment)
    * fixed bug in op2p deployment to list interfaces and flows
      from both bridges involved in the test
    * test report updated to state exact rfcxxxx type of traffic
      type, e.g. rfc2544_continuous
    * test report of step driven testcases was updated to contain
      measured values from traffic generator in CSV report
    * method for ovs flow comparison was modified to normalize
      IPv4 CIDR network addr (e.g. 10.0.0.5/8 => 10.0.0.0/8)

    JIRA: VSPERF-512

    Change-Id: Ib4f38dcdfbf3820dd766b25520da0ad0c81f3293
    Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
    Reviewed-by: Al Morton <acmorton@att.com>
    Reviewed-by: Christian Trautman <ctrautma@redhat.com>
    Reviewed-by: Sridhar Rao <sridhar.rao@spirent.com>
    Reviewed-by: Trevor Cooper <trevor.cooper@intel.com>
    Reviewed-by: Ciara Loftus <ciara.loftus@intel.com>

diff --git a/docs/submodules/vswitchperf b/docs/submodules/vswitchperf
index 80c9f96..5fe9089 160000 (submodule)
--- a/docs/submodules/vswitchperf
+++ b/docs/submodules/vswitchperf
@@ -1 +1 @@
-Subproject commit 80c9f96f5e60ee6a2a93494a0aae82014c2311b6
+Subproject commit 5fe9089057bf23fd7ff312779d928cc9932fd38b