Update git submodules

* Update docs/submodules/parser from branch 'stable/euphrates'
  - Fix test for apex

    Currently the test in apex is error, the patch will fix it.

    JIRA: PARSER-160

    Change-Id: I0c290f7819468e1f400f1610fc87bceb72086b92
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index c5c33ff..9e8270d 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit c5c33ff28000cf16ee8ccf4426ea0e748e8a38c9
+Subproject commit 9e8270d05c80712d579b627d46964bcf99458228