Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Change floating ips management from nova to neutron"
  - Change floating ips management from nova to neutron

    Nova does not longer support floating ip creation/deletion.
    This patch moves that logic to neutron client.

    Change-Id: I2c4146149fe5be534d9c50d78d831b5af1957ad7
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a0902eb..c8d5216 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a0902eb46edae259f4c0bd0c0209678d989e904b
+Subproject commit c8d5216c01c42f0e090f9b441985f8ebc3eca0ed