Update git submodules

* Update docs/submodules/ccsdk/features.git from branch 'master'
  to 752248349615d55473dcfdd9f4b141e8706716fa
  - Remove A1 adaptor from sdnr-northbound-all aggregator

    Remove A1 adaptor from sdnr-northbound-all feature aggregator so
    that it can be optionally installed separately.

    Issue-ID: CCSDK-2371
    Signed-off-by: Dan Timoney <dtimoney@att.com>
    Change-Id: Ie06aa1652b3b498a6b2c60896e102e55fb98d560

diff --git a/docs/submodules/ccsdk/features.git b/docs/submodules/ccsdk/features.git
index e8c830d..7522483 160000 (submodule)
--- a/docs/submodules/ccsdk/features.git
+++ b/docs/submodules/ccsdk/features.git
@@ -1 +1 @@
-Subproject commit e8c830df7d9915cb0d9d9fe9b47c3ca2f03aeafc
+Subproject commit 752248349615d55473dcfdd9f4b141e8706716fa