Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Fix clean() in cloudify ims and router

    It raised exceptions in both branches [1]

    [1] https://build.opnfv.org/ci/view/functest/job/functest-compass-baremetal-daily-master/209/console

    Change-Id: I87b33cedae768f92296efa4570d2a47cd9cdbdf2
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 6ff2161dd0af56bcbac49fd1417dc52031c55bf5)

  - Refactor Ims testing

    Change-Id: I8b7b74a3753c2d4d4614e9a2798283bd3f99d5d2
    Signed-off-by: Valentin Boucher <valentin.boucher@kontron.com>
    (cherry picked from commit 026a9bfaa656d0e5ade327feda64f17796d6f209)

  - Release floating ips used by juju_epc

    It also cleans flavor_alt and image_alt.

    Change-Id: I62296075eca75c3c18caac4a3cddeef1fdb26e1b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit d072a425f48640780ca6a6d1f6332ec73d6bf5be)

  - Remove VnfOnBoarding

    All the vnfs are now inherating from scenarios.

    Change-Id: I63509102067676ca0676b773db542086caa02d84
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 366adc757e3beaeb1db7811df511a0e38c3eee6d)

  - Leverage vyos_vrouter on Cloudify

    It also stop rebooting the VMs.

    Change-Id: Ib0f9e1aac1dd8505378b0688930eb41a590a11f1
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit e2fe0591bcfc462a91c028a857d967f4b9832bbe)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 86497fd..e813e04 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 86497fd200578650160fdcada935cfc631343800
+Subproject commit e813e044715dca61a9ec7139d591fb1716830367