Update git submodules

* Update docs/submodules/modeling/modelspec.git from branch 'master'
  to 2d7e35393f15e1b5e8ca394ce8859b2307aa4b51
  - add new committer for modelspec
    
    Issue-ID: MODELING-149
    
    Change-Id: Id2ada889019404791e94224abe46da00f4121d92
    Signed-off-by: denghui02 <denghui12@huawei.com>
    
diff --git a/docs/submodules/modeling/modelspec.git b/docs/submodules/modeling/modelspec.git
index d621ef4..2d7e353 160000
--- a/docs/submodules/modeling/modelspec.git
+++ b/docs/submodules/modeling/modelspec.git
@@ -1 +1 @@
-Subproject commit d621ef46b5475d9f448b9fdeb00563d5745df440
+Subproject commit 2d7e35393f15e1b5e8ca394ce8859b2307aa4b51