ipatests: Increase expect timeout for interactive mode
    
    Increase the default timeout for expect function when testing
    interactive mode to mitigate an issue when the tests are failing
    on the slow systems.
    
    Fixes: https://pagure.io/freeipa/issue/9183
    
    Signed-off-by: Michal Polovka <mpolovka@redhat.com>
    Reviewed-By: Mohammad Rizwan Yusuf <myusuf@redhat.com>