Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Exemption process for disabling strict API validation

    This document describes an exemption process for disabling strict API
    response validation.

    JIRA: DOVETAIL-617

    Change-Id: I690efdcae7dd15a6c0781a837a62677904836fca
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index b2c513d..caf95e0 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit b2c513d028451cc142e1647bf749f245020bf15b
+Subproject commit caf95e09ef0206354b46d51f83690e20bc69e848