Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Renaming test cases to include test framework names

    Replacing the generic "dovetail" prefix of the testcase definitions with
    the name of the OPNFV test framework which hosts the test.

    JIRA: DOVETAIL-719

    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>
    Change-Id: I8f90423b8908197bdc7adddf82c61ff394893f52

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index cccef01..081eaf1 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit cccef0172c0c026e63cd4df3e7f377daaafbc509
+Subproject commit 081eaf19163fdaeb1e0038240a2e74007527c98c