Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Support VIO (VMware in OpenStack)

    It allows converting all images to vmdk and then patching all
    testcases. DEPLOY_SCENARIO should match vio to do so.

    convert_images.sh has to be called as prerequisite.

    JIRA: FUNCTEST-992
    JIRA: FUNCTEST-993

    Change-Id: Ie35bf80af1cd9610a8c416ec01b81b61c6148cfe
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit d176e20067368d834e8b77d4f685f48cb54d03f5)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 82816f5..8088849 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 82816f5f2796fb74ea209b71b0f7821494d44fa3
+Subproject commit 80888497f7f6f4abb93d0c9dc368cb2009f8fc3e