Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - Updated fuel adapter (vlan1000, interfaces format)

    Change-Id: I848f13acca08c4c8a24eeecd3554ea6d50bbb565
    Signed-off-by: Guillermo Herrero <guillermo.herrero@enea.com>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index c4b4629..908dab5 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit c4b4629b59923e049500fc776b8a251d4cd4c3b9
+Subproject commit 908dab58edbbe8f22db14a9261693a54e9b2d8fd