Update git submodules

Update git submodules

* Update docs/submodules/multicloud/framework.git from branch 'master'
  to 2cf6469e7af254a65f4fde20b2ef61efad32cd57
  - Add model to represent VfModuleModel and Artifact management

    . add VfModuleModel to represent content of VfModule
    . add Gsonutil to support List which is the content of Vf
      Module meta json
    . add CloudArtifact to deal with Artifact for subplug action
    . Fix pom.xml typo

    Change-Id: Ic459118323bf50939493b0f0feff7ba96dd9a64d
    Issue-ID: MULTICLOUD-511
    Signed-off-by: liboNet <libo.zhu@intel.com>