Description of problem:
After upgrading a plugin image the browser continues to request old plugin files

How reproducible:
100%

Steps to Reproduce:
1. Build and deploy a plugin generated from console-plugin-template repo
2. open one of the plugin pages in the browser
4. Make a change in the code of that page, rebuild and deploy a new image
5. Try to view this page in firefox - you'll get a 404 error. In chrome you'll get the old page

The root cause is
The plugin js file names are auto generated, so the new image has different js file names.
But the plugin-entry.js filename remains the same, the file is cached by default and continues to request the old files