Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Added image_settings parameter to get_image()."
  - Added image_settings parameter to get_image().

    With the ImageSettings object, was able to add logic to
    filter on the image format field in addition to the name.

    JIRA: SNAPS-157

    Change-Id: I6fc51a9d4d03dc9971005ee738e6592d8ed70485
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index f9a9c6e..c0ac1fe 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit f9a9c6eb7e11ba70e39b5b05b4dbba743bf3fd02
+Subproject commit c0ac1fe4ef0aec4cb681748e3a55da5806fa4145