Update git submodules

Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Correct the mapping of nodes and roles in virtual deploy

    JIRA: DAISY-56

    Now the roles are assigned to nodes randomly, because the function
    'add_hosts_interface' in tempest.py just uses zip to map the
    host's name to the host.

    libvirt_utils.py: get mac addresses from VM
    environment.py: save the mac addresses
    daisy_server.py: write a new deploy.yml which contains the mac addresses
        and copy the file to daisy server
    get_conf.py: get mac addresses from the new deploy.yml
    tempest.py: assigned roles to nodes when the mac addresses matched
    controller.xml: increase the RAM to make difference with computer nodes
    deploy.sh: apply this change to bash script

    Change-Id: Ia61b60d39d319c5d01e3505727fafc63a0585858
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>