Add support for Basic Authentication

1. Jira Server instance configuration is working fine with the Jira Administration.
2. Whereas, Cloud instance credentials were not proper.
3. HTTP 403 forbidden issue.
4. Check this confluence link:
https://confluence.atlassian.com/cloudkb/jira-and-confluence-cloud-os_username-and-os_password-embedded-in-url-no-longer-available-872007971.html
5. Refer this forum for further,
https://forum.xwiki.org/t/jira-macro-filter-error/1268