Update git submodules

* Update cinder from branch 'master'
  to 2bdc892a023d2bbdf8e66e0e9645a86b776fcf61
  - Merge "NFS driver: Fix driver fails to verify virtual size for Glance with Cinder/NFS"
  - NFS driver: Fix driver fails to verify virtual size for Glance with Cinder/NFS

    Glance images stored in Cinder with NFS as backend are sized in
    the Cinder database to match the data size of the Image-volume
    instead of the virtual_size. This prevents storage
    resource to be unnecessarily allocated, but may also results into
    errors in operations that requires checking for volume size
    consistency.

    Such checks aims to prevent users from extending NFS volumes
    from within the virtual machine and outside of Cinder scope, by
    comparing the virtual size of the NFS image with its size stored
    in Cinder's database.

    This patch changes how volume size is verified to fail only when
    a volume virtual size has been extended in size instead of trying
    to verify the exact size in bytes.

    Closes-Bug: #2073146
    Change-Id: I5c2216b72dda6bb3316ef30b352a6a8efe3a0429
    Signed-off-by: Fernando Ferraz Silva <fesilva@redhat.com>

diff --git a/cinder b/cinder
index bb3895590cc58e238a6a9a67d8829484aded04f5..2bdc892a023d2bbdf8e66e0e9645a86b776fcf61 160000 (submodule)
--- a/cinder
+++ b/cinder
@@ -1 +1 @@
-Subproject commit bb3895590cc58e238a6a9a67d8829484aded04f5
+Subproject commit 2bdc892a023d2bbdf8e66e0e9645a86b776fcf61