Unable to login having uppercase letters in email address in CloudForms 4.2

Issue

Users are unable to login to CloudForm's 4.2 when they have uppercase letters in there name. We are presented with the following error:

Snippet from evm.log

[----] W, [2017-03-17T10:32:46.844259 #25168:e205b8]  WARN -- : <AuditFailure> MIQ(Authenticator.rescue in block in authorize) userid: [cs\test_user] - Validation failed: Email must be a valid email address
[----] E, [2017-03-17T10:32:46.844575 #25168:e205b8] ERROR -- : [ActiveRecord::RecordInvalid]: Validation failed: Email must be a valid email address  Method:[rescue in run_task]
[----] E, [2017-03-17T10:32:46.844742 #25168:e205b8] ERROR -- : /opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/validations.rb:78:in `raise_validation_error'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/validations.rb:50:in `save!'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/attribute_methods/dirty.rb:30:in `save!'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/transactions.rb:324:in `block in save!'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/transactions.rb:395:in `block in with_transaction_returning_status'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `block in transaction'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/connection_adapters/abstract/transaction.rb:189:in `within_new_transaction'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/connection_adapters/abstract/database_statements.rb:232:in `transaction'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/transactions.rb:211:in `transaction'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/transactions.rb:392:in `with_transaction_returning_status'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/transactions.rb:324:in `save!'
/opt/rh/cfme-gemset/gems/activerecord-5.0.0.1/lib/active_record/suppressor.rb:45:in `save!'
/var/www/miq/vmdb/app/models/authenticator.rb:144:in `block in authorize'
/var/www/miq/vmdb/app/models/authenticator.rb:254:in `run_task'
/var/www/miq/vmdb/app/models/authenticator.rb:114:in `authorize'
/var/www/miq/vmdb/app/models/authenticator.rb:238:in `authorize_queue'
/var/www/miq/vmdb/app/models/authenticator.rb:64:in `authenticate'
/var/www/miq/vmdb/app/models/user.rb:155:in `authenticate'
/var/www/miq/vmdb/app/services/user_validation_service.rb:99:in `validate_user_kick_off_task'
/var/www/miq/vmdb/app/services/user_validation_service.rb:19:in `validate_user'
/var/www/miq/vmdb/app/controllers/dashboard_controller.rb:625:in `validate_user'
/var/www/miq/vmdb/app/controllers/dashboard_controller.rb:463:in `authenticate'