Update git submodules

* Update docs/submodules/netconf from branch 'master'
  to c7e371eb1e23ba3b86747a27172acca78a449706
  - NETCONF-512: Add cases for missing NormalizedNode types

    ReadDataTransactionUtil.prepareData was missing cases for
    LeafSetNode, OrderedLeafSetNode, OrderedMapNode and UnkeyedListNode.

    Change-Id: Iaf44ce9b24044584e37d524835ec4a51843acd32
    Signed-off-by: Tom Pantelis <tompantelis@gmail.com>

diff --git a/docs/submodules/netconf b/docs/submodules/netconf
index 427ce04fcab7307276f66192c9ee25b0b35a89e6..c7e371eb1e23ba3b86747a27172acca78a449706 160000 (submodule)
--- a/docs/submodules/netconf
+++ b/docs/submodules/netconf
@@ -1 +1 @@
-Subproject commit 427ce04fcab7307276f66192c9ee25b0b35a89e6
+Subproject commit c7e371eb1e23ba3b86747a27172acca78a449706