Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to c81bb5111f7c73cba81e36c4e13fa3da1c19e0ec
  - Merge "add equals and hashcode support to dslquerybuilder"
  - add equals and hashcode support to dslquerybuilder

    added equals and hashcode support to dsl query builder

    Change-Id: I8affdd5da489e5aeacb5682ba83320a9d99c211d
    Issue-ID: SO-1598
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 7faa828..c81bb51 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 7faa8287dcff4f51c4ac127e25342a366c8b525f
+Subproject commit c81bb5111f7c73cba81e36c4e13fa3da1c19e0ec