Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - [mcp] Mend installation scripts

    * add/unify ssh options
    * get base image to temporary directory
    * specify os type for virt install
    * fix symbolic link to reclass
    * remove outdated fuel submodules

    Change-Id: I6833ce78c8fff97e1b89f4e92e6e6b470e9ce99f
    Signed-off-by: Michael Polenchuk <mpolenchuk@mirantis.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index f85c841..ecfbd90 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit f85c84133c2f8d6aec3c707cfb92cb03db543bd6
+Subproject commit ecfbd90af36439bcb51ec2cace0d0d2340e9fee1