Update git submodules

Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Add CLI in verigraph."
  - Add CLI in verigraph.

    JIRA: PARSER-180

    Add CLI to select one of the available interfaces (i.e. REST or gRPC), one of the supported service descriptor formats (i.e. TOSCA/XML, TOSCA/YAML, JSON),
    and the operations to perform (i.e. read, create, update, delete graphs and run verifications).

    Change-Id: I02f4d86e221baf0ac583d0ffd0ebe028aa6209be
    Signed-off-by: serena.spinoso <serena.spinoso@polito.it>