Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 15ecb55f2f045e2e185a94b4d4985d2563af8b40
  - Merge "do not overwrite status message with rollback"
  - do not overwrite status message with rollback

    update rollback error for rollback and not original msg
    run code formatting on updated files
    add unit test for false value of isRollback flag

    Change-Id: I25d8fb9771766461b1192e3758237dfc199787f8
    Issue-ID: SO-2081
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 0d56268..15ecb55 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 0d562688867a1b2e7a34ee6416cd54f7a9f6b89e
+Subproject commit 15ecb55f2f045e2e185a94b4d4985d2563af8b40