Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 4d8c1ab21a3f5baf82a91a3cc9ab2af8823e6e34
  - Merge "Update service object"
  - Update service object
    
    Seperate the procedure to install service and loops.
    
    Issue-ID: CLAMP-566
    Change-Id: Ied7143ce8849baffda7678e82f4d6c4d9f1443d9
    Signed-off-by: xuegao <xg353y@intl.att.com>
    
diff --git a/docs/submodules/clamp.git b/docs/submodules/clamp.git
index 47767ec..4d8c1ab 160000
--- a/docs/submodules/clamp.git
+++ b/docs/submodules/clamp.git
@@ -1 +1 @@
-Subproject commit 47767ece79658f9c2f20fe77af6cee0ca6c027df
+Subproject commit 4d8c1ab21a3f5baf82a91a3cc9ab2af8823e6e34