Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Fixes inserting ceph OSD into compute role"
  - Fixes inserting ceph OSD into compute role

    The lineinfile was not actually inserting the CephOSD line because it
    was already present later in the file (regardless of 'insertbefore').
    Therefore we can fix it by simply removing the CephOSD line before we
    try to set it, since we do not need it in the storage role anyway.

    Change-Id: I8c8d9b6baccfc77ea582fab6ad438b02293f96fb
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index f27da77..5a6ac42 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit f27da77b87837e025907f689890b413c8f183c59
+Subproject commit 5a6ac42f278fbe793375c03462d74f80c1527a5a