Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 493477ef59ce12d082683f188e0253fe2d34bdff
  - Merge "Modify requestDbClient to add methods for OrchestrationTask"
  - Modify requestDbClient to add methods for OrchestrationTask

    Issue-ID: SO-2368

    Add methods to handle OrchestrationTask

    Change-Id: I4595c5a1099977e5dba259bfbf77d666b1db699c
    Signed-off-by: Harry Huang <huangxiangyu5@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 662f2cd..493477e 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 662f2cdcb69c7ec2264493a8c329f946001c1020
+Subproject commit 493477ef59ce12d082683f188e0253fe2d34bdff