Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add fixes in openci job"
  - Add fixes in openci job

    Force workspace cleanup
    Do not use credentials plugin, but hardcode it.

    Change-Id: I5b6e59382c25fc75a748f90fbd030521dac9071f
    Signed-off-by: Yolanda Robla <yroblamo@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9a62162..3acad62 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9a621621a31c4278b09b715eacd815580a85b8aa
+Subproject commit 3acad6212235cc9409713e838e6833c65c19fd2a