HWIOAuth config update for Sylius v0.12.0 standard to fix default null options

gistfile1.yml

hwi_oauth:
    firewall_name: main
    resource_owners:
        amazon:
            type:          amazon
            client_id:     %sylius.oauth.amazon.clientid%
            client_secret: %sylius.oauth.amazon.clientsecret%
        facebook:
            type:          facebook
            client_id:     %sylius.oauth.facebook.clientid%
            client_secret: %sylius.oauth.facebook.clientsecret%
            scope:         "email"
            options:
                display: popup
        google:
            type:          google
            client_id:     %sylius.oauth.google.clientid%
            client_secret: %sylius.oauth.google.clientsecret%
            scope:         "https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile"
            options:
                access_type:      offline
                approval_prompt:  force
                display:          popup
                login_hint:       email address