Update git submodules

* Update docs/submodules/ccsdk/distribution.git from branch 'master'
  to ff21fbb2e3d52f1ca80a9adfd6a8c8bf01b5f6d2
  - Bug fix in DMAAP publication templates

    Remove "0a" hex newline character at the end of the
    DMAAP publication template files. DMAAP message router
    is very sensitive

    Issue-ID: CCSDK-2379
    Signed-off-by: SandeepLinux <Sandeep.Shah@ibm.com>
    Change-Id: I7b4e5925c693463cea3441eb15f0e2d4dd3f8416

diff --git a/docs/submodules/ccsdk/distribution.git b/docs/submodules/ccsdk/distribution.git
index 9f84625..ff21fbb 160000 (submodule)
--- a/docs/submodules/ccsdk/distribution.git
+++ b/docs/submodules/ccsdk/distribution.git
@@ -1 +1 @@
-Subproject commit 9f846251aaac86c258fe44f71c00c72442a742ed
+Subproject commit ff21fbb2e3d52f1ca80a9adfd6a8c8bf01b5f6d2