Update git submodules

* Update docs/submodules/openflowplugin from branch 'stable/carbon'
  to 70dd9710de137f37d9b24d39f0fae9728f9bcf5b
  - OPNFLWPLUG-952: All links disappear from the topology

    In cluster split situations LLDP Speaker can get into a bad state, with
    incorrect number of node-connectors mapped locally. In some cases
    multiple controllers can start sending packet outs. The solution here is
    to use clustered DTCL to keep the node-connectors more consistent across
    all instances of LLDPSpeaker and use EOS to determine who should
    actually transmit the packet.

    Change-Id: I36df734dff23688e8ace27b42f85291aa62ac391
    Signed-off-by: Evan Zeller <evanrzeller@gmail.com>

diff --git a/docs/submodules/openflowplugin b/docs/submodules/openflowplugin
index 8759af85398955bcfef8dbf35cc0710bf8d8d4d3..70dd9710de137f37d9b24d39f0fae9728f9bcf5b 160000 (submodule)
--- a/docs/submodules/openflowplugin
+++ b/docs/submodules/openflowplugin
@@ -1 +1 @@
-Subproject commit 8759af85398955bcfef8dbf35cc0710bf8d8d4d3
+Subproject commit 70dd9710de137f37d9b24d39f0fae9728f9bcf5b