Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 11a1f5125102aaff36ff5034346da137b10886dc
  - Merge "Substitute String Literal with Constant"
  - Substitute String Literal with Constant

    Substitute String Literals with Constant MsoVnfCloudifyAdapterImpl class

    Issue-ID: SO-1490

    Change-Id: I5b8340049a85a5405f158cac2518c571b74bc440
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index a606609..11a1f51 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit a606609968f186f15f6a37d4c81d8254407f7f42
+Subproject commit 11a1f5125102aaff36ff5034346da137b10886dc