Update git submodules

Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Changed pattern on how objects lookup themselves by name and project.

    The pattern being replaced has unwittingly added the requirement that
    all creator credentials must be of type 'admin' as when looking up
    the associated project ID required a call to keystone.projects.list().

    As the SNAPS integration tests were always creating users with an 'admin'
    role, this issue was not caught. As part of this patch, integration test
    users will no longer be admin.

    JIRA: SNAPS-274

    Change-Id: I02957f69e31a9d4dfa63362d371f061687e59fbf
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>