Update git submodules

* Update docs/submodules/releng from branch 'master'
  - globals/slave-params: Remove unused Fuel overrides

    Cleanup some unused parameter overrides, which were never in effect
    in the first place. For CI PODs, we inherit only installer specific
    parameters, so slave-label based overrides are ignored.

    PODs:
    - arm-pod5;
    - arm-virtual2;
    - ericsson-pod1;
    - lf-pod2;

    This reverts commit bb22c8c02df3e9d030ff64c304536c31b78a37a6.
    This reverts commit fc26623f9d7f211a9e29e246a2b13bdae5b3982b.

    Change-Id: Iee80ad8357f5126c4aa7510ed66ab6e79c20f3fc

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0a53645..ea2f9cd 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0a53645f5a262d198d61da2eea9a7ef85a233c63
+Subproject commit ea2f9cd48459650545e7ea22c33eb6ce9ff9da33