Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - Extend web portal to show if API exemption was used during a test run

    JIRA: DOVETAIL-634

    The OVP web port needs to read from the test results if the strict API
    response validation exemption was used or not and show it
    correspondingly.

    Detailed description:

        As discussed on the Dovetail call on 2018-04-11, the web portal should
    show if API response validation was enabled or disabled. The information
    if API response validation was enabled or disabled is to be determined
    based on the dovetail.log file. If API response validation was
    disabled,** the log file contains the line "Strict API response
    validation DISABLED.". Upon uploading a result tar-package, the web
    portal should extract this information from the log file, store it in
    the database, and display it as follows:

        This indication shall be displayed along with the test summary on the
    Test Run Results page as either:

        "API response validation enabled"   or
        "API response validation disabled"

        For clarification: API response validation is enabled by default. API
    response validation is disabled only if  the --no-api-validation command
    line option is given.

    Change-Id: Ifacb1eb2127cc8dc6364c98dead1217aeedfd359
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index cb02bcc..67de424 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit cb02bccdef30575bb46080475ca13fdf8b6b4b2f
+Subproject commit 67de42416576c952ec0d6a159a0d57fc4cabc414