Update git submodules

* Update docs/submodules/pharos from branch 'master'
  - Merge "Update eyaml README"
  - Update eyaml README

    On CentOS7 systems the gem command is contained in the 'rubygems'
    package, not 'ruby-gems'.

    After the keys have been moved, there is not reason to keep around the
    'keys' directory.

    Change-Id: I5cb9f474276de75b650ddf323a279e139fb62d37
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/pharos b/docs/submodules/pharos
index 5c24596..70922b1 160000 (submodule)
--- a/docs/submodules/pharos
+++ b/docs/submodules/pharos
@@ -1 +1 @@
-Subproject commit 5c245967e6326672bb797932a427095b2c52fcc4
+Subproject commit 70922b10acedf38dcb64af0f3d19e933e031963e