Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - xci: SHA bump as of April 4

    The bifrost, osa, and ansible role requirements sha1s are bumped
    based on the HEAD of the master of the projects on April 4.

    designate is also disabled based on the comment the osa commit
    mentions.

    https://review.openstack.org/gitweb?p=openstack/openstack-ansible.git;a=commit;h=d9e1330c7ff9d72a604b6b4f3af765f66a01b30e

    Change-Id: Ib47515490c799d3b1d2b4b319277c8900cd37328
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>