Update git submodules

Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Fixes deployment failure with allNodesConfig

    This pulls in upstream patch to revert a bad commit that causes the
    "Unknown Property controller_ips". Also includes a fix for being able to
    detect if patches that are merged upstream are also promoted into
    TripleO images or container images. This happens by comparing the time
    the patch was submitted to the time when the TripleO Image or Docker
    Image was last updated.

    JIRA: APEX-610
    JIRA: APEX-612

    Change-Id: I1c2ab7fb4425b407acd7b6d9ebab914ed3a24478
    Signed-off-by: Tim Rozet <trozet@redhat.com>