Update git submodules

* Update docs/submodules/kvmfornfv from branch 'master'
  - [fuel-plugin] Add missing dependency for shellvar

    Add missing augeasproviders_core module into
    pre build stage as dependency for shellvar puppet type.

    JIRA: KVMFORNFV-77
    Change-Id: Ib06c7b08b35fab87b0faf9f946fcc9d630d825af
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/kvmfornfv b/docs/submodules/kvmfornfv
index 39928e5..d3981db 160000 (submodule)
--- a/docs/submodules/kvmfornfv
+++ b/docs/submodules/kvmfornfv
@@ -1 +1 @@
-Subproject commit 39928e5e9503db6f1971c74a84e3d10a4e4f6a6e
+Subproject commit d3981dbb10bd286bd950f46aca72f398b887b0f8