Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove opera testcase as Opera is inactive"
  - Remove opera testcase as Opera is inactive

    testcases.yaml is updated as well.

    Change-Id: I88b3a51a732496899f6825fd38137bcf7e6a8caa
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7c3035d..cfd987a 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7c3035d0b2ac3e2fdec39c77028804247c1013d9
+Subproject commit cfd987a6ce153be88413a38ade2bea3af2f32dcd