Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Disable syslog in heat-translator for functest integration"
  - Disable syslog in heat-translator for functest integration

    Since run in container with the base image of alpine, in which no
    service and rsyslog installed, it need to delete syslog in
    heat-translator:
    reference patch: https://gerrit.opnfv.org/gerrit/#/c/41115/

    JIRA: PARSER-149

    Change-Id: Iddd8c5fa54556fff2670a9439653de7e97b8aa18
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index 87920ff..4acb042 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit 87920ff99ba0a2ba5cbe0532a4f6d94846525f51
+Subproject commit 4acb042de77d187199a233b0bd3886047dac8289