Update git submodules

* Update docs/submodules/sdc/sdc-tosca.git from branch 'master'
  to e4e4b6f8db3d1fade4648cb7ef220759c5b7f2cf
  - README file updating - more info
    
    Change-Id: Ie89b14869354caa0dac1d7cfe2221ec761a14bf6
    Issue-ID: SDC-2057
    Signed-off-by: Manzon, Inna (im453s) <im453s@intl.att.com>
    
diff --git a/docs/submodules/sdc/sdc-tosca.git b/docs/submodules/sdc/sdc-tosca.git
index fccd6f6..e4e4b6f 160000
--- a/docs/submodules/sdc/sdc-tosca.git
+++ b/docs/submodules/sdc/sdc-tosca.git
@@ -1 +1 @@
-Subproject commit fccd6f6c65f6a568b40db0bf89eaa9904441d929
+Subproject commit e4e4b6f8db3d1fade4648cb7ef220759c5b7f2cf