Update git submodules

Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 6049499c5a17cfa58f351b3731837463b7359047
  - Move tests to their own directory

    File layout was also restructured for better
    readability.

    Change-Id: Id1cba755127319c45ec50b08d12daa543c8c9ae5
    Issue-ID: INT-1529
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
  - Add tox runner for pytest in prov-mns-provider

    Pytest setup as entrypoint to gating job in CI.

    Change-Id: If052af0f7c8272844f644cb3789dbc3a8451c629
    Issue-ID: INT-1529
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
  - Extend unit tests for provisioning management service

    This adds additional unit tests for the service provider for
    PATCH and DELETE request methods.

    Change-Id: If0cce9c713f2999c859910661308c24ac68f04d6
    Issue-ID: INT-1529
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
  - Add unit tests for provisioning management service

    This adds pytest based unit tests for the service provider.
    Testing PUT and GET requests is covered within this patch.

    Change-Id: Id9bcb870b032c6fce64985a5fd501bbd44031f50
    Issue-ID: INT-1529
    Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>