Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Provide a list of check results files instead of one

    This patchs gives the ability to provide more than one check results
    file. Furthermore, it does not alter the behavior of the existing tests
    but prepares dovetail to be able to fetch information from many
    sources.

    Change-Id: I23cd23d2908ad6bdddd94b977813d0e81dc0c05a
    Signed-off-by: Stamatis Katsaounis <mokats@intracom-telecom.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 5dda9bb..73b7c7b 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 5dda9bb5a5359e46f4c4a47fa9e6bb6cbbe370bc
+Subproject commit 73b7c7b7f9d78787039dcda96bc3af3155064e13