Initialize the Repo for Holmes Rule-mgmt

Change-Id: I1bca56ba605043650c328d703f15b87525265112
Issue-ID: HOLMES-54
Signed-off-by: Guangrong Fu <fu.guangrong@zte.com.cn>
diff --git a/.gitmodules b/.gitmodules
index 521f714..49a741c 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -64,3 +64,6 @@
 	url = ../vnfsdk/model
         branch = .
         ignore = dirty
+[submodule "docs/submodules/holmes/rule-management.git"]
+	path = docs/submodules/holmes/rule-management.git
+	url = ../holmes/rule-management