Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Created domain classes for networks and subnets.

    Created Network and Subnet domain classes so neutron_utils.py functions
    returning these types of objects will not be leaking out implementation
    details as each API version can change these data structures which is now
    being handled by the SNAPS neutron utility.

    JIRA: SNAPS-113

    Change-Id: Id95dd0f8c2618c20a1a73a428abb95686dfa8251
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index b490e8d..de6536f 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit b490e8dc9fb01c6f9c44dd9a585ca1a1ae00bf19
+Subproject commit de6536ff2ba4faa1a3d4ed27e93d692cae20e5d2