Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to a957153093c974b0554a9c6244f852cc0063d843
  - ccvpn-detail component- test file error fix
    
    Fixed multiple errors in ccvpn-detail component spec file
    
    Issue-ID: USECASEUI-280
    Change-Id: I9bb7540e4ba4b13c7df926d2d54c1afe5be89ea9
    Signed-off-by: Arundathi Patil <arundpil@in.ibm.com>
    
diff --git a/docs/submodules/usecase-ui.git b/docs/submodules/usecase-ui.git
index 237ed72..a957153 160000
--- a/docs/submodules/usecase-ui.git
+++ b/docs/submodules/usecase-ui.git
@@ -1 +1 @@
-Subproject commit 237ed72e04ae121297a0594be069a26db49d0f5b
+Subproject commit a957153093c974b0554a9c6244f852cc0063d843