Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Fix functest_run script for role of heat_stack_owner"
  - Fix functest_run script for role of heat_stack_owner

    When update openstack to ocata and run test in functest, the following
    error happends:
      ERROR: Missing required credential: roles ['heat_stack_owner']
    It need to add role heat_stack_owner to parser user

    JIRA: PARSER-156

    Change-Id: Ie0417c53c7dbd28efe8d9c4eb3fda23de8e1f841
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index 4acb042..6b7f693 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit 4acb042de77d187199a233b0bd3886047dac8289
+Subproject commit 6b7f69347669e8a8e12e09774935c76e30654eb3