Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Revert "Temporarily disable Snaps CreateRouterSuccessTests"

    This reverts commit 7786a54c5abe32380468a924f77895b573c576d3.

    Change-Id: I53e5f0073191079ab41a8159df2001ff9745da5a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index ab94fcb..c1507df 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit ab94fcbbbdf37c13c6dc5d9a02e6ddff64943983
+Subproject commit c1507df552b1178e0eeba1e764edbfaf996a68cf