`jmp create` allows an attepmpt of creating an invalid lease, `jmp delete` allows deleting an already deleted lease

[evakhoni]

if you try to create a lease via jmp shell without passing a selector, it will display the correct error, letting you know that a selector is required.

Error: the lease is invalid: The selector for the lease is empty, a selector is required

if you however create it via jmp create, it will allow creating an invalid one with no selector, which cannot be satisfied, and will provide you with a lease number as if you have a valid lease to use

 jmp create lease --duration 2h 
NAME                                  SELECTOR  BEGIN TIME  DURATION  CLIENT    EXPORTER
019c67cd-3ce1-7efb-8d29-b2cf12afdf9f  <none>                2:00:00   evakhoni      

expecting jmp create to return a similar error to jmp shell in this case.

also, an attempt to delete the lease multiple times, returns a success every time, instead of once

  jmp delete leases 019c67cd-3ce1-7efb-8d29-b2cf12afdf9f
lease "019c67cd-3ce1-7efb-8d29-b2cf12afdf9f" deleted
 ~  jmp delete leases 019c67cd-3ce1-7efb-8d29-b2cf12afdf9f
lease "019c67cd-3ce1-7efb-8d29-b2cf12afdf9f" deleted
 ~  jmp delete leases 019c67cd-3ce1-7efb-8d29-b2cf12afdf9f
lease "019c67cd-3ce1-7efb-8d29-b2cf12afdf9f" deleted
 ~  

expecting some kind of message like "error: lease already deleted" instead.