Create preliminary documentation for ONAP DMI-Plugin

Create Preliminary documentation for Istanbul release
of the DMI Plugin.
Added new plugins in POM to generate swagger doc for design page.
Added icons from Cps-Core, along with latest conf.py file from
http://gerrit.onap.org/r/doc

Issue-ID: CPS-625
Change-Id: I30582de9b07e93c1c2ecc18003ee6882994690d8
Signed-off-by: DylanB95EST <dylan.byrne@est.tech>
Signed-off-by: shivasubedi <shiva.subedi@est.tech>
diff --git a/docs/deployment.rst b/docs/deployment.rst
new file mode 100644
index 0000000..0f53898
--- /dev/null
+++ b/docs/deployment.rst
@@ -0,0 +1,15 @@
+.. 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
+.. _deployment:
+
+
+DMI Plugin Deployment
+#####################
+
+.. warning:: draft
+
+.. toctree::
+   :maxdepth: 1
\ No newline at end of file