[JENKINS-23009] Add Support for 3 different email attributes for AX Extension

The standard email attribute type URI for the AX extension is "http://axschema.org/contact/email". However, many of the OpenId providers do not support this standard attribute type URI but instead support one of the following:

    http://schema.openid.net/contact/email
    http://openid.net/schema/contact/email

The Jenkins openid-plugin currently supports only "http://schema.openid.net/contact/email". For a better user experience, it is recommended to ask/support all three email attributes.

Corresponding ISSUE logged for this commit: https://issues.jenkins-ci.org/browse/JENKINS-23009