Update git submodules

* Update docs/submodules/releng/builder from branch 'master'
  to ef5ea42ef1fedec0958f51fc312843b7b10e4769
  - Merge "Set gitreview username and setup remote gerrit"
  - Set gitreview username and setup remote gerrit

    Explicitly set the gitreview username to be the jenkins-releng
    account. Then configure the remote gerrit alias to point to
    ODL Gerrit.

    Change-Id: Id0b68aa2bb94ded57ec357821657b96848dc5ccd
    Signed-off-by: Thanh Ha <thanh.ha@linuxfoundation.org>

diff --git a/docs/submodules/releng/builder b/docs/submodules/releng/builder
index 64ae6ca18d36ee69bc22f5d42a853847d87c779b..ef5ea42ef1fedec0958f51fc312843b7b10e4769 160000 (submodule)
--- a/docs/submodules/releng/builder
+++ b/docs/submodules/releng/builder
@@ -1 +1 @@
-Subproject commit 64ae6ca18d36ee69bc22f5d42a853847d87c779b
+Subproject commit ef5ea42ef1fedec0958f51fc312843b7b10e4769