Update git submodules

* Update docs/submodules/fuel from branch 'master'
  - Correct ssh key copy options

    Change-Id: Iea7a28fcd2ae59bc3ba76bffb42675dfc4bc917d
    Signed-off-by: Volodymyr Blokhin <vladrulez@gmail.com>

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index f2a8139..8e0b5d2 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit f2a813931b01e29783eb927e5962a920a1ada27e
+Subproject commit 8e0b5d2550241d44a9d91bbbb040e3446656a02f