Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 6ccd240f9a6fa92939432eb43b66b28c2147945e
  - Merge "Initial checkin of updates for vf module replace"
  - Initial checkin of updates for vf module replace

    fix toString method and add unit tests for new code
    Fix Null pointer issue in UT, extra chars
    Initial checkin of updates for vf module replace

    Change-Id: I2d62f5c2077cd022ccf796d126494e526ad48c54
    Issue-ID: SO-1893
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 020d22c..6ccd240 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 020d22c979408ac2bf0b4c7766db98e059d5acd8
+Subproject commit 6ccd240f9a6fa92939432eb43b66b28c2147945e