Update git submodules

Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 6848923d2ce67b445dc21cbbdbcfb3463b2fe2ee
  - Merge "Fixed Sonar issues in the onap.clamp.clds.client packages"
  - Fixed Sonar issues in the onap.clamp.clds.client packages

    Fixed Sonar issues:
     - change the HasMap to more optimized(in this case) EnumMap in GuardPolicyAttributesConstructor
     - remove no necessary casting in the TcaRequestFormatter
     - remove not used value in the DcaeDispatcherServices
    Additionally correct javadoc in PolicyClient.

    Change-Id: I6435fe093248073fee9749366e98d5720a8fe375
    Issue-ID: CLAMP-346
    Signed-off-by: Krystian Kedron <k.kedron@partner.samsung.com>