Update git submodules

Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to d6890fce461c040c2776dfdedd47be282a29f877
  - Fix welcome screen close timeout

    The welcome screen close timeout is triggering even if you close the
    welcome window. After 4 seconds it forces the user to go to the home
    screen even if it is already in another screen. The timeout was also
    the cause for one known problem in the sanity ui test
    "onapOnboardVNFflow".
    Adds also a print screen to the ui tests, to check if the resource
    was really clicked.
    Removes invalids "throws Exception" declarations that were being
    handled in the main test method "Vf.changeInstanceNameInVfTest", that
    was catching also assertions errors.

    Change-Id: Idff26b1ba5b199482e68cc50532fa20f4f834e34
    Issue-ID: SDC-2648
    Signed-off-by: andre.schmid <andre.schmid@est.tech>