Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 18c479f0b09bb406c21c707bf7acc03fc34ef0a0
  - Return http 404 for wrong prefix, not 401

    The correct http code for wrong REST API url should
    be http "404 Not Found", not "401 Unauthorized".

    Change-Id: I78710fcd4c43926dbba3227c4099bf6239095f19
    Issue-ID: INT-1529
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>

diff --git a/docs/submodules/integration.git b/docs/submodules/integration.git
index 6049499..18c479f 160000 (submodule)
--- a/docs/submodules/integration.git
+++ b/docs/submodules/integration.git
@@ -1 +1 @@
-Subproject commit 6049499c5a17cfa58f351b3731837463b7359047
+Subproject commit 18c479f0b09bb406c21c707bf7acc03fc34ef0a0