Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to f9f67564fa766b1a9bbc58747083d8f4938b03be
  - Merge "fix sonar issue"
  - fix sonar issue
    
    fix sonar issues
    
    Issue-ID: SO-1811
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: I5049d25904c3abfdaccd84a3356c14f47be4bc57
    
diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index a610ba5..f9f6756 160000
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit a610ba5990ac65c962de8bbedc676b2ec29ed8f1
+Subproject commit f9f67564fa766b1a9bbc58747083d8f4938b03be