Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Add missing unit tests for report file

    JIRA: DOVETAIL-724

    This patch adds unit tests for report file methods of Dovetail which were
    missing.

    Change-Id: I2ba7c8f9fcfb962988b2904b01538e9f89a0d849
    Signed-off-by: Stamatis Katsaounis <mokats@intracom-telecom.com>
  - Add missing unit tests for run file

    JIRA: DOVETAIL-724

    This patch adds unit tests for run file methods of Dovetail which were
    missing.

    Change-Id: I1700c8c97430899abdc2b752a3dcbd4d09a334ac
    Signed-off-by: Stamatis Katsaounis <mokats@intracom-telecom.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 815b74f..74f5c31 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 815b74f9440275682c701aa75006f01c1ff7860c
+Subproject commit 74f5c313bb3745998a89dcef8d82fdb8678e01b5