Update git submodules

Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Enhanced launch.py app to support all types.

    Added application support for users, projects, and
    security groups. In addition, added support for multiple
    credential sets so one can manage multiple projects
    potentially on multiple clouds.

    Added Jinja2 template support for substituting values
    in the template file with values contained in the
    environment file.

    Added ansible substituion value for a VM's floating IP.
    Changed credentials interface attribute's default value
    from 'admin' to 'public'.

    Added optional pre_sleep_time attribute to ansible execution
    that will wait for a given number of seconds prior to attempting
    to apply a playbook to a set of VMs.

    JIRA: SNAPS-4, SNAPS-5, SNAPS-6, SNAPS-26

    Change-Id: I67b8d69a3b06a43631d80e8fe0c56e02773dbfbe
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>