Update git submodules

* Update cinder from branch 'master'
  to fd810bcf15efebae836fe136a5845b716f9f51b0
  - Merge "api: Remove unnecessary validation helpers"
  - api: Remove unnecessary validation helpers

    Now that we have JSON schemas for all APIs that accept a body, we no
    longer need to do this validation in the method.

    Change-Id: Ie09de58bd1b01edea916d7e43e32eb81e7877fae
    Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

diff --git a/cinder b/cinder
index f8b6f404d68f65f9ad47b8804f254b960c4361de..fd810bcf15efebae836fe136a5845b716f9f51b0 160000 (submodule)
--- a/cinder
+++ b/cinder
@@ -1 +1 @@
-Subproject commit f8b6f404d68f65f9ad47b8804f254b960c4361de
+Subproject commit fd810bcf15efebae836fe136a5845b716f9f51b0