Update git submodules

Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 2f3a4ddaee7bf578f83fa9af7bd18e54c84b54d3
  - Merge "USECASEUI-388 fixed and with additional changes Fixed i18Resource, subtittle wrap and directive folder Path. Alos added few changes for adapting multiple templates."
  - USECASEUI-388 fixed and with additional changes
    Fixed i18Resource, subtittle wrap and directive folder Path. Alos added few changes for adapting multiple templates.

    Change-Id: Ie64485d24d11bcfd59be6c3c119dbccbc6c9b499
    Issue-ID: USECASEUI-388
    Signed-off-by: root <preethamshyam.sathiyaseelan@us.fujitsu.com>