Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 1952b95f7514adaf51b066c803002127d1ec1687
  - Switch to lf-virtual1 back

    Change-Id: Ic424f6977e394c1686236d345bd2b760373dc115
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index bdb801c..1952b95 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit bdb801ca684390f714d0572c7ca380086dd95c3a
+Subproject commit 1952b95f7514adaf51b066c803002127d1ec1687