Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Refactor glance_utils.py v1 image creation."
  - Refactor glance_utils.py v1 image creation.

    Replace 4 blocks using named parameters with on call to
    create() with kwargs.

    JIRA: SNAPS-141

    Change-Id: I1268877a8524bb25a7f605f583ace9602f5a9c1b
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index c1b8dbb..8e9920d 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit c1b8dbb0a4c9a7baa4f370955dc6c6f00bbb67a9
+Subproject commit 8e9920d2e8bd4a3d404b4589312cdc9510708a37