Handled the case where username are duplicate, If multiple user having same firstname and lastname.

[kairamkondarajesh]

https://github.com/ymcatwincities/openy_gated_content/issues/163

Steps to test:

• [ ] Take pull from openy-163 branch.
• [ ] Ensure the Y-USA provide enabled in virtual-y gc auth settings.(admin/openy/virtual-ymca/gc-auth-settings)
• [ ] Then try login with below mentioned barcodes.( from homepage)
• [ ] Finally observe every user should login into the site.

{ "Barcode": "5252083", "Email": "pmarebear67@hotmail.com", "FirstName": "Mary", "LastName": "Bennett", } { "Barcode": "5577444", "Email": "Mc58bennett@gmail.com", "FirstName": "Mary", "LastName": "Bennett", } { "Barcode": "30044273809", "Email": "ghill7107@yahoo.com", "FirstName": "Mary", "LastName": "Bennett", }