Update git submodules

* Update docs/submodules/releng from branch 'master'
  to f7bcaf5e3cb4dccb34615739687a369c92956768
  - Pass parameters to build-image.sh

    Passing the qcow2 image details as a parameter to build-image.sh

    Signed-off-by: Luc Provoost <luc.provoost@intel.com>
    Change-Id: Ie32164c8e3c98ddd0651e274c68feab265b24a48

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e418f52..f7bcaf5 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e418f52210a089471c6407f179776c0d2e10bc51
+Subproject commit f7bcaf5e3cb4dccb34615739687a369c92956768