Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Refactor server retrieval API calls."
  - Refactor server retrieval API calls.

    Refactored nova_utils#get_servers_by_name() to get_server() and
    include a VmInstSettings object in addition to the server_name
    parameter as well as only returning one VmInst object.

    JIRA: SNAPS-168

    Change-Id: I30c22a36b07ce143ee8c1c76a77fd75f0062e4aa
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index f3bfd3d..48f714f 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit f3bfd3d092cf7122ade96b645c59101b9de3074d
+Subproject commit 48f714f7dc56433148197b5fefb3d9253928a8b3