Update git submodules

* Update docs/submodules/vswitchperf from branch 'master'
  - ci: Plot graphs from CI results

    CI scripts were enhanced to plot graphs from last
    results and push them into artifactory. Graphs
    will be updated by every CI run and can be included
    e.g. in VSPERF results WIKI page.

    Change-Id: Iada4acd7cc2c3dc73b9f30a429fe2b53020c4d3b
    Signed-off-by: Martin Klozik <martinx.klozik@intel.com>

diff --git a/docs/submodules/vswitchperf b/docs/submodules/vswitchperf
index 0975aa2..d109396 160000 (submodule)
--- a/docs/submodules/vswitchperf
+++ b/docs/submodules/vswitchperf
@@ -1 +1 @@
-Subproject commit 0975aa2ec9baf2e852be7991f62ba40865997456
+Subproject commit d10939601932809da1d5ae717323ac33a72a0d75