Update git submodules

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>