Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Update juju_epc to leverage on new scenarios

    It avoids duplicating codes across all OPNFV testcases.

    It also fixes the issues when starting mongodb [1] by upgrading juju agent.
    It stops supporting keystone v2 as the other testcases.

    [1] https://build.opnfv.org/ci/view/functest/job/functest-compass-baremetal-daily-master/lastFailedBuild/console

    Change-Id: I06cddddef1121292ffb695dcb73aa79a07c23192
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 592584fbde2fb9b3b58015d374b2100026310d24)

  - 1) Cleanup floating IPs that are assigned through Juju Deployment.
    2) Add SCTP rule explicitly to the retrieved Security Group.

    Change-Id: I38e5b1267dbcdcf8e5aadb3c06dd784044e774d4
    Signed-off-by: soumaya <soumaya.nayek@rebaca.com>
    (cherry picked from commit 92b52ef2bd3567c6c34288a22801249adb5ee7ab)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index f5cb5c6..86497fd 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit f5cb5c6359f11c32ce3ad978951f1f7a173e3997
+Subproject commit 86497fd200578650160fdcada935cfc631343800