Create Preliminary Documentation for CPS-Core & NCMP

Create Preliminary documentation for Istanbul release
of the CPS-Core.
Added new plugins in POM to generate swagger doc for design page.
Added latest conf.py file from http://gerrit.onap.org/r/doc
Followed template from work done by Chaker here
https://wiki.onap.org/display/DW/Component+Documentation+Template

Issue-ID: CPS-633
Change-Id: I431776e4d052ec65bf1e1d7709d12d0100592cd5
Signed-off-by: DylanB95EST <dylan.byrne@est.tech>
Signed-off-by: shivasubedi <shiva.subedi@est.tech>
diff --git a/docs/design.rst b/docs/design.rst
index c7691ae..f9f12de 100755
--- a/docs/design.rst
+++ b/docs/design.rst
@@ -1,5 +1,6 @@
 .. This work is licensed under a Creative Commons Attribution 4.0 International License.
 .. http://creativecommons.org/licenses/by/4.0
+.. Copyright (C) 2021 Nordix Foundation
 
 .. DO NOT CHANGE THIS LABEL FOR RELEASE NOTES - EVEN THOUGH IT GIVES A WARNING
 .. _design:
@@ -8,6 +9,8 @@
 CPS Design
 ##########
 
+.. warning:: draft
+
 .. toctree::
    :maxdepth: 1
 
@@ -16,7 +19,9 @@
 
 CPS supports the public APIs listed in the link below:
 
-:download:`OpenApi Specification <api/swagger/openapi.yml>`
+:download:`CPS Rest OpenApi Specification <api/swagger/cps/openapi.yaml>`
+
+:download:`CPS NCMP RestOpenApi Specification <api/swagger/ncmp/openapi.yaml>`
 
 Exposed API
 -----------