Update git submodules

* Update docs/submodules/ccsdk/features.git from branch 'master'
  to a6557cbba03576e7593160fd2a6abe68f0af86b3
  - Specify sli scope as provided

    Specify scope of sli dependency as provided to avoid issue in
    generated feature.xml

    Change-Id: I104c4e9b276b68faf1e63f5dd642e3740c2a2962
    Issue-ID: CCSDK-1445
    Signed-off-by: Timoney, Dan (dt5972) <dtimoney@att.com>

diff --git a/docs/submodules/ccsdk/features.git b/docs/submodules/ccsdk/features.git
index bc48337..a6557cb 160000 (submodule)
--- a/docs/submodules/ccsdk/features.git
+++ b/docs/submodules/ccsdk/features.git
@@ -1 +1 @@
-Subproject commit bc48337b724109bc3ecf50b38c977e88edcbde75
+Subproject commit a6557cbba03576e7593160fd2a6abe68f0af86b3