Update git submodules

* Update docs/submodules/releng/builder from branch 'master'
  to 54fcb7f47b64d22b2f95b59c65a891826c406248
  - Merge "Add MEMCONF as a function var to set_java_vars"
  - Add MEMCONF as a function var to set_java_vars

    - In light of the fix we needed recently for CONTROLLERMEM
      where other scripts were coming in on the fly to adjust
      it's value, we need to pass that in to set_java_vars when
      we call it so it's not just taking the default value
      defined when we source common-funcs.sh

    - also made the variables passed to set_java_vars() more
      appropriately named.

    NOTE: there is nothing currently that would change MEMCONF
          on the fly, but this will protect us if/when it is
          ever needed.

    see: https://git.opendaylight.org/gerrit/c/67989/

    Change-Id: I650b84338f9d20db9ce292ea3cdfab415cbc252b
    Signed-off-by: Jamo Luhrsen <jluhrsen@redhat.com>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index b0ee3dcc9ba7c94a5969548f7e818894e65b05d9..54fcb7f47b64d22b2f95b59c65a891826c406248 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit b0ee3dcc9ba7c94a5969548f7e818894e65b05d9
+Subproject commit 54fcb7f47b64d22b2f95b59c65a891826c406248