Update git submodules

Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Fix aarch64 image naming in parser"
  - Fix aarch64 image naming in parser

    Some hardcoded values within the parser project create problems for
    opnfv-armband. In this patch we fix image naming for parser, at
    least for the testcase we run in opnfv-ci.

    1)Tosca functions like get_attribute() or get_item() could in theory
    be used but due to the current structure of the vRNC file it is not
    possible.

    JIRA: ARMBAND-369
    JIRA: PARSER-175

    Change-Id: I8cdc82b9e5c9008f3a3a5110d65706440d208ab8
    Signed-off-by: Charalampos Kominos <Charalampos.Kominos@enea.com>