Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to b98475a20856e2a75f7c31a1b49920b3e0c7c38d
  - Documentation for DistributeTraffic LCMs

    Documentation for Distribute Traffic and
    Distribute Traffic Check LCMs

    Change-Id: I8dc6ec3110c711857d8788f01edfcca87a887317
    Signed-off-by: Lukasz Rajewski <lukasz.rajewski@orange.com>
    Issue-ID: APPC-1447
    (cherry picked from commit 284d93a4770224956138eec224479fef9d356fff)

diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 0fbad08..b98475a 160000 (submodule)
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 0fbad083a25a5982ccc2de26fc159cde834fb1b3
+Subproject commit b98475a20856e2a75f7c31a1b49920b3e0c7c38d