Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Prepare integration of daisy and dovetail"
  - Prepare integration of daisy and dovetail

    JARA: DAISY-76

    1. add daisy adapter in releng utils and modules
    2. add daisy adapter in dovetail jjb script
    3. support id_dsa as ssh key

    Change-Id: I15a1c0cfcc17ae1fe6b7020f674b8bbbb72f4a7a
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4071808..de475ca 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 407180828a48320043d37109b9f942087b2df267
+Subproject commit de475ca391c9b11a3e76d36487e3b2ee06f364a1