d89e3ab ipatests: Test that Match ProxyCommand masks on no shell exec

Authored and Committed by rcritten a year ago
    ipatests: Test that Match ProxyCommand masks on no shell exec
    
    Accounts without a shell should not execute ProxyCommand
    otherwise the authorization will fail.
    
    https://pagure.io/freeipa/issue/7676
    
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>