Update git submodules

* Update keystone from branch 'master'
  to 44e058fe9ff67e1a70e27b511e8463aa7549f0be
  - Merge "api-ref: Add description field in Endpoint"
  - api-ref: Add description field in Endpoint

    The Keystone defines a 'description' field on its schema which can be
    returned if the user have set it on resource creation/update, but the
    docs doesn't mention this field, which can be confusing.

    Change-Id: Id64792411d2704fee581cf86806eb430f0319256
    Signed-off-by: Winicius Silva <winiciusab12@gmail.com>

diff --git a/keystone b/keystone
index bd178ee91f92f50398cf940b1db3eb2157ed7fd3..44e058fe9ff67e1a70e27b511e8463aa7549f0be 160000 (submodule)
--- a/keystone
+++ b/keystone
@@ -1 +1 @@
-Subproject commit bd178ee91f92f50398cf940b1db3eb2157ed7fd3
+Subproject commit 44e058fe9ff67e1a70e27b511e8463aa7549f0be