Update git submodules

Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 615eb9bc91c2e685c4eebb96b44b157fd71fa8f0
  - Merge changes Id525d532,I91723b83

    * changes:
      Fix bugs reported by sonar
      Fix bugs reported by sonar

  - Fix bugs reported by sonar

    Fix bugs reported by sonar as critical, major, ...

    Issue-ID: CLAMP-841
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    Change-Id: Id525d532d4f405216da44f95503e06e172458e70

  - Fix bugs reported by sonar

    Fix bugs reported by sonar as critical, major, ...

    Issue-ID: CLAMP-841
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    Change-Id: I91723b83289e25d6e27b0c925107e50314f441fc