Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Fix StatefulEntityType when entitytype is not define"
  - Fix StatefulEntityType when entitytype is not define

    Currently, if a entity type is not defined, the defs in
    StatefulEntityType will be none, then the access to self.defs will raise
    error, finally the parser will be crushed. this patch will enhance it.

    JIRA: PARSER-153

    Change-Id: I5db50102e9c63428298ce6c8ecbf38e3bd8e57f8
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index 792dd7a..7c96fb6 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit 792dd7acf8ac48ccb6fc35d99e4099559a2c9e9c
+Subproject commit 7c96fb6cb02a5bb8f957f7129bf6149e07dfa8c2