Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 0d9e2a9146bc306afe6e6a87381b9f95adae2d78
  - Merge "Removed unused imports and rearranged variables Removed unused imports and moved variables to comply with Java Code Conventions. Issue-ID: SO-1490"
  - Removed unused imports and rearranged variables
    Removed unused imports and moved variables to comply with Java Code Conventions.
    Issue-ID: SO-1490

    Change-Id: Iabf605fde63638244c2c4fd52e4787863512ee57
    Signed-off-by: NITIN KAWA <nitin.kawa@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index f677f92..0d9e2a9 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit f677f922e672d1e9bab0ae55e4ce7ee814680554
+Subproject commit 0d9e2a9146bc306afe6e6a87381b9f95adae2d78