Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to d6e85d547f5eac006b1da5d3b2ddc19daf8564da
  - Merge "added in graceful shutdown to spring boot"
  - added in graceful shutdown to spring boot

    added in graceful shutdown to spring boot
    updated the poms to include catalina and upped fabric
    added in eventlistener instead of application listener

    Issue-ID: SO-2655
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
    Change-Id: I2d8674cc82a9167604b2d38a49bffba42cee32ff

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index bf8459d..d6e85d5 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit bf8459dc1b06f4a1f7e36e30fbe32136ab9c5a25
+Subproject commit d6e85d547f5eac006b1da5d3b2ddc19daf8564da