Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Created domain object for users.

    OpenStack implementation details were leaking out into the
    user creator.

    JIRA: SNAPS-117

    Change-Id: I67c77c75055b37819512d1e7712925b839fbc047
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index e05d0de..56ad05c 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit e05d0deffeeda87c43e746fc09cad2249f2adcc5
+Subproject commit 56ad05c9ed980a5e4c71d18bb4067519ae7efa49