Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  - New PTL for Dovetail

    This patch is used as a basis for voting on the new Dovetail PTL.  After
    the nomination period [1] has ended, there is one candidate [2].

    In order to complete the PTL election process, all Dovetail committers
    shall review this patch and cast a vote (-1, +1). The voting period ends
    in a week from now on October 24. The vote passes if a majority of
    committers +1 this patch.

    [1] https://lists.opnfv.org/g/opnfv-tech-discuss/message/22133
    [2] https://lists.opnfv.org/g/opnfv-tech-discuss/message/22145

    Change-Id: Iacf53f5c0bbe7e0c5f3c47131569be72ed8623ec
    Signed-off-by: Georg Kunz <georg.kunz@ericsson.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index cd4962c..a017201 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit cd4962c9ca223f8b4287dc2123ac40a8652a1028
+Subproject commit a017201e115d27c86a00959e7baedbb0c95f0580