Update git submodules

* Update docs/submodules/releng/builder from branch 'master'
  to bb3bbe83f2f37e66da0f5834d342d3bd1bead010
  - Strip git2u packages from devstack rocky

    CSIT tests with devstack rocky tries to pull in git dependencies
    which conflicts with existing git2u rpms. As a workaround
    uninstall them on the devstack rocky image since its not
    required.

    Change-Id: Ib4f2797c83ded9d19d4d391bbde28cadfdd1f3a6
    Signed-off-by: Anil Belur <abelur@linuxfoundation.org>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index e71de3de91c46f5e8f5b40b34303c4243aed7a44..bb3bbe83f2f37e66da0f5834d342d3bd1bead010 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit e71de3de91c46f5e8f5b40b34303c4243aed7a44
+Subproject commit bb3bbe83f2f37e66da0f5834d342d3bd1bead010