Vt*: No secure format forcing for passwords

Users can set even a single character as password. There should be standard format validation for secure password such as 8 characters long with capital/special words etc.

Updated secure format for password as follows

• Password should be at least 8 characters long
• Include at least one number
• Include at least one lowercase alphabet
• Include at least one uppercase alphabet
• Include at least one special character in the password