Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - [ovp-web] Use new program logo/text for OVP portal home page

    JIRA: DOVETAIL-570

    OPNFV marketing has provided new logos for OVP that will be incorporated
    on the portal home page and attached to this issue. The 'Infrastructure'
    logo must by used. The other two logos (Application, Lab) currently on
    the development site must be removed for now.

    Position the new logo in the upper-left side and position the blurb
    language to the right of it. The new blurb language to swap in (all
    uniform, non-bold font) is provided below:

        The OPNFV Verified program (OVP) demonstrates the readiness and
        availability of commercial products based on OPNFV. Verified products
        and services submitted by vendors and service providers become compliant
        by implementing explicitly defined interfaces, behaviors and key
        features while retaining distinct and value-added innovations across
        features and capabilities. The OPNFV Verified program grants products
        and services with the "OPNFV Verified" mark. Get started with your OVP
        application today.

    Change-Id: Iaf4172fe61ea46133c474207f77ba24b841211e4
    Signed-off-by: grakiss <grakiss.wanglei@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index b28552a..1bbda3c 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit b28552a3fce6b4cb900823a0645cac7731451042
+Subproject commit 1bbda3ceda250a3d28ee70e5d9f0ea09cc91e261