Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Stopping setting identity-feature-enabled if Patrole"
  - Stopping setting identity-feature-enabled if Patrole

    It avoids differing from all other tempest-based testcases for a
    useless config option.

    Change-Id: I02e1786f0ba3c1f7da11f258e80f57ca624247f9
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 42867b6..6468343 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 42867b6f9bd8053b4d91ee0fc1fd127ae2919f15
+Subproject commit 646834350c6fceb385f0907902986accf0ed4274