Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 8c26ced50d7ad4528d123d217e543c8a5fd6db98
  - Merge "add new functionality to aai client"
  - add new functionality to aai client

    Remove only the first occurrence of parentUri from uriTemplate.
    add createIfNotExists to transaction clients
    moved classes to generic GraphInventory location
    removed unused interfaces from graphinventory client
    refactored all graph inventory clients

    Change-Id: I2b946674ff92c44d33fff2f327e96655ed5c0195
    Issue-ID: SO-1501
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index f1bb514..8c26ced 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit f1bb514849877e8dfd0e4f6d20695ccce939c286
+Subproject commit 8c26ced50d7ad4528d123d217e543c8a5fd6db98