Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Closing keystone sessions after done with them.

    By not closing all of the keystone sessions being created when
    running all of the tests, this may be the root cause to the IOError
    occasionally being observed:

    IOError: [Errno 24] Too many open files

    JIRA: SNAPS-285

    Change-Id: I7fc7ab0c6cdd02f1ae32bb3ae4f121cb465d5693
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index fb0ab37..9e9e095 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit fb0ab37c323717ca10ac3f3bda24ae390635495e
+Subproject commit 9e9e09590cce321f55996c1a31370ffdf28251b0