Updated git submodules

Project: releng/builder master 021f20d5d896ae7e11ea2750a6dfb2f2d970a0d3

Merge "Tox template for single branch projects"

Tox template for single branch projects

The Int/Test job is converted.
The point is to get rid of
integration-test-verify-tox-boron and similar.

Change-Id: I9b5bfa47e4393dd2701cb6b72446bc8327407c49
Signed-off-by: Vratko Polak <vrpolak@cisco.com>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index c1db70fe1b5a1263a19b4b3e0e2ea196f1700482..021f20d5d896ae7e11ea2750a6dfb2f2d970a0d3 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit c1db70fe1b5a1263a19b4b3e0e2ea196f1700482
+Subproject commit 021f20d5d896ae7e11ea2750a6dfb2f2d970a0d3