Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Merge "Drafting the first "refstack" version of the test scope document."
  - Drafting the first "refstack" version of the test scope document.

    To be aligned with the committers and agreed as the "foundation" list of
    test scope for moving forward with DoveTail test selection.
    Requires a majority of committer approvals prior to merging.

    Change-Id: I5fb091d2190a183d24ba9e766d19aba9e6a7c094
    Signed-off-by: ChristopherPrice <christopher.price@ericsson.com>
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index bae1971..dac82ae 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit bae197167f137c478f8bb3268d9e047a6b6839b6
+Subproject commit dac82ae3cd24b61fc520e8e4d6bc9d98cb49ee54