Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "CPERF: Reduce CSIT for HA deployments"
  - CPERF: Reduce CSIT for HA deployments

    Since CSIT does not pass on HA, but we still want to promote some
    snapshots for HA, reduce the CSIT suites to L2 and L3 only.

    Change-Id: Iaf739f972211c1e94de781a006065d7130ddf1c3
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index df3b354..a8d1862 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit df3b3543a553568d7a8b3a2f34f9e62c50fa8701
+Subproject commit a8d1862ddcf41dd233152cc5e2b0b5f3bbf96f31