Update git submodules

Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 407bbefe5b0b932f6c6bed65193815c78b4d41b5
  - Add 'required in runtime' for service inputs

    User may want to set required to true for some inputs
    so that make sure those input values are given at service
    instantiation time.

    By this change 'required in runtime' column is introduced into
    service inputs table in Properties Assignment screen
    and user can select required true/false for each input.

    Change-Id: I0d676d2d20e02c975d51c7f4d2bb63c699743d66
    Issue-ID: SDC-2659
    Signed-off-by: Satoshi Fujii <fujii-satoshi@jp.fujitsu.com>