Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Merge "Add coverage test item"
  - Add coverage test item

    Currently there is no coverage report, so it's necessary to add covrage
    test for parser.

    JIRA: PARSER-159

    Change-Id: I7688b2c7e3adc8d0009e5edf33be41c7c75a5d87
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index b991369..3fb494c 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit b991369780f92cf7103881ce29cf589bd208269b
+Subproject commit 3fb494c0b8187afc3b76740c274336ec1947e200