Add test cases for users with specific roles

[bharatak]

This test case should test the role-based access for Bahmni. The following needs to be verified

1. A user with Read-Only access should not be able to save data in Bahmni
2. A user with Registration access should not access any other apps

[SwathiVarkala]

@lipikadugar [Reminder] If its done please close it mentioning the git commit.