Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Fix to a router's internal subnet resoulution.

    Ensures that any subnet added to the router is available to that project.

    Change-Id: Iddfad14a093551bc0f4a05c52b20f02db2474d78
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index f17b5d4..9f00c18 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit f17b5d4631682b4807dc1c4267da65258413ef73
+Subproject commit 9f00c18a8bda11e3ffdafa53832cf4816e785196