Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to b5e31aaea92e3204d0257608f96eb1a182bcb37f
  - Merge "update the version of plugin to fix jenkins docker"
  - update the version of plugin to fix jenkins docker

    update the version of fabric8 to fix jenkins docker push

    Change-Id: I5b827bd56bf4d58763bf9d5eaa87d3218ba85c1c
    Issue-ID: SO-1848
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d9c6a22..b5e31aa 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d9c6a2202fbe93bdf2c54601a1cabb684301225f
+Subproject commit b5e31aaea92e3204d0257608f96eb1a182bcb37f