Merge pull request 'Jenkins build status badge' (#11) from pramilaniroshan/device-mgt-core:build-status-badge into master

Reviewed-on: community/device-mgt-core#11

README.md

@@ -2,4 +2,4 @@
 
 <a href='https://opensource.org/licenses/Apache-2.0'><img src='https://img.shields.io/badge/License-Apache%202.0-blue.svg'></a><br/>
 
-[![pipeline status](https://gitlab.com/entgra/carbon-device-mgt/badges/master/pipeline.svg)](https://gitlab.com/entgra/carbon-device-mgt/commits/master)
+<a href='#'><img src="https://storage.googleapis.com/cdn-entgra/build-status/device-mgt-core/icon.svg"></a>