Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Promote Ricky to committer"
  - Promote Ricky to committer

    Ricky has been a very active Apex user and contributor over the past few
    release cycles.  He has helped find and fix numerous bugs, along with
    being responsible for L2GW and SRIOV features for Fraser release.  He
    has shown a willingness to jump in and help whenever there are issues
    with Apex, and also a willingness to work upstream in TripleO/OpenStack
    to implement new features.

    Change-Id: Ifd032fd349a46b0e34b2d77ba56e3c564e70226c
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 5255775..742f9d1 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 52557753e9cd240bc69d6b5d037a5b84e310050c
+Subproject commit 742f9d16ab751c2d0398c2d332374cffcf6822ff