Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Add default flavor

    Add default falvor since there is not any flavor for
    some installers.

    JIRA: PARSER-172

    Change-Id: I5fb0fdc4857a35840399c8cec8f051055a3a4eac
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index d34e39b..d6c75bc 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit d34e39b641ab1ef5436ace62a814a5d8b027853b
+Subproject commit d6c75bcf6eb3dd88a2dee1478236dcf09b73daf9