network: WPA Enterprise: don't ask twice for password (#1120374)
    
    When configuring ([Configure], using nm-c-e) wireless connection for AP we
    want to activate it automatically after configuration (leaving nm-c-e).
    But we don't want to do it if:
    
    (A) the connection has been active before configuration, or
    (B) the connection  was activated automatically after saving the configuration
    (as is usual case for WPA Enterprise AP configuration)
    
    We used to check if there is an active connection for the AP before
    configuration (running nm-c-e), but to catch also case (B) (and prevent asking
    for password for second time), move the check to *after* configuration (after
    leaving nm-c-e and possibly saving the configuration)
    
    Related: rhbz#1120374