Update git submodules

* Update docs/submodules/dovetail from branch 'master'
  to 0295ecdd460d01064497e0f545e75d3759322779
  - bugfix: stree test failed

    Shouldn't change the command from python to python3 to run stress test,
    because this command is run in bottlenecks container and it hasn't transfer to
    python3 yet.

    Change-Id: I6875d855e75ae72e647e70c2feb34ed2cda38f15
    Signed-off-by: xudan <xudan16@huawei.com>

diff --git a/docs/submodules/dovetail b/docs/submodules/dovetail
index 2da009a..0295ecd 160000 (submodule)
--- a/docs/submodules/dovetail
+++ b/docs/submodules/dovetail
@@ -1 +1 @@
-Subproject commit 2da009acdae7ccf9643cee86af9eb657ca2fd279
+Subproject commit 0295ecdd460d01064497e0f545e75d3759322779