Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Switch to OS::Neutron::FloatingIPAssociation

    OS::Nova::FloatingIPAssociation is hugely deprecated and doesn't work
    with latest OpenStack Queens deliverables.

    Change-Id: Icc43ba8a3466efbcc03e190b7e56f84eb69b7e51
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 150aec4..89a0e76 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 150aec40c506dc3f7bdf182977898575c019593e
+Subproject commit 89a0e76315c0ec123e3674536fcda07a6c9c3c06