Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to fa43775ab277f30f9403c69535cfa4e0be0b4f6e
  - Merge "Move String literal to left-hand side of equals"
  - Move String literal to left-hand side of equals

    Move String literal to left-hand side of equals DSLNodeKey class

    Issue-ID: SO-1490

    Change-Id: Ie8b1b12aaf38bbb0f1f37a56f375ab4c002d6407
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 37a15ac..fa43775 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 37a15ac835736a3aa057f602ad4aa39b32b4dab7
+Subproject commit fa43775ab277f30f9403c69535cfa4e0be0b4f6e