Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 6c2ebf59a8d198fe1213331bc1984022ac3bb8f3
  - Merge "Added Basic Authorization in receiving Notification"
  - Added Basic Authorization in receiving Notification

    Ve-Vnfm (SOL002) Adapter project

    Issue-ID: SO-2574
    Signed-off-by: Piotr Borelowski <p.borelowski@partner.samsung.com>
    Change-Id: Ib01bf2301dad5a699751c060cfb28eac6858e003

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 6ee552c..6c2ebf5 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 6ee552c89912b1dba08bf725b948ffef3d6ab56b
+Subproject commit 6c2ebf59a8d198fe1213331bc1984022ac3bb8f3