prevent users from staging out to T1_US_FNAL

[belforte]

Upon request from FNAL admins:

avoid that users put T1_US_FNAL as storage SE when they really needed to use T3_US_FNALLPC. There is no valid use case for T1_US_FNAL iin Crab, so if found.. throw an error and stop.

[ericvaandering]

Thanks! Maybe next week at OSG All Hands

[belforte]

if it gets urgent and you do not get to it, let me know and I should be able to push it in quickly with next patch

[belforte]

@ericvaandering is this still needed ?

[ericvaandering]

Yes

[belforte]

seems users learnt by now