Update git submodules

* Update docs/submodules/usecase-ui.git from branch 'master'
  to 8a0e999b11d04d600cdf0414c7d644bacef8c5e1
  - update the required angular modules and i18n resources for monitor service
    
    Issue-ID: USECASEUI-387
    
    Signed-off-by: seshukm <seshu.kumar.m@huawei.com>
    Change-Id: I26f9adde57216a1b9c6d18f3e280baadac2e16f9
    
diff --git a/docs/submodules/usecase-ui.git b/docs/submodules/usecase-ui.git
index 155c491..8a0e999 160000
--- a/docs/submodules/usecase-ui.git
+++ b/docs/submodules/usecase-ui.git
@@ -1 +1 @@
-Subproject commit 155c4912100293e60a3c85c589c55492aa502388
+Subproject commit 8a0e999b11d04d600cdf0414c7d644bacef8c5e1