Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to f152e38d8120333a2572d0b785f4e68aedc92a04
  - Merge "Improve metadata support"
  - Improve metadata support
    
    Improve the metadata support for CDS and default values
    
    Issue-ID: CLAMP-786
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    Change-Id: I8a24e31a93ff1e288ec8f0f6d522b1b15d39a8d2
    
1 file changed