Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Adding assertion message to test validation.

    Change-Id: I609d09ed8b4f75baeb1ad5454c9ddde9e996a3fe
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 88c9496..bd658db 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 88c9496ee5d40adbb324c0d449ed1659e661d700
+Subproject commit bd658dbe250e93a9fa4405b99ecdb2ad1a7029b6