Update git submodules

* Update docs/submodules/yardstick from branch 'stable/fraser'
  - Merge "Replace glance delete image with shade client." into stable/fraser
  - Replace glance delete image with shade client.

    Remove get_image_id function.
    Function delete_image now uses shade client.

    JIRA: YARDSTICK-892

    Change-Id: I6e8510dfa49aa14786ed7ac3382b85c4e699fb9e
    Signed-off-by: Shobhi Jain <shobhi.jain@intel.com>
    (cherry picked from commit d6c1b8b7bfd257efd5fe2df30dd450bdb2c57c7d)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 88b23a6..405385a 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 88b23a66e761d7a6f14d3bdafe72ef0cdb668a42
+Subproject commit 405385acf890856390eb321cd1fc96c19ebfda0d