Update git submodules

* Update docs/submodules/parser from branch 'master'
  - Add getting custom node by capability

    Currently _get_node_type_by_cap in nodetype definition is only concerned
    standard node, not consider custom node, the patch will support to get
    node by custom node.

    JIRA: PARSER-126

    Change-Id: I822acc8bfb747562dc084783d863adf31603e794
    Signed-off-by: shangxdy <shang.xiaodong@zte.com.cn>

diff --git a/docs/submodules/parser b/docs/submodules/parser
index 5b3f19f..e1ad316 160000 (submodule)
--- a/docs/submodules/parser
+++ b/docs/submodules/parser
@@ -1 +1 @@
-Subproject commit 5b3f19f30ff02faa80ad02762ae23ad020b04218
+Subproject commit e1ad31691ea4249a7dd33e9280dd6d0df8bc9475