Misleading warnings when submitting a Lifetime Model exception with an input file containing duplicate entries

[dchristidis]

Description

If the user is submitting a Lifetime Model exception request using the CLI and the input file contains some dataset multiple times, then they will see some warning about datasets not existing.

Instead, it should show a warning that the entry is being removed for being a duplicate (so that, when reviewing the summary, one can easily understand the difference between total and successfully-submitted DIDs).

Steps to reproduce

$ cat covfefe
mc16_13TeV.364677.Sherpa_CT10_CT14nnlo_CSShower_2to2jets_JZ1W.deriv.DAOD_STDM11.e6997_e5984_s3126_r10201_r10210_p4615_tid26084487_00
mc16_13TeV.364677.Sherpa_CT10_CT14nnlo_CSShower_2to2jets_JZ1W.deriv.DAOD_STDM11.e6997_e5984_s3126_r10201_r10210_p4615_tid26084487_00
$ rucio add-lifetime-exception --inputfile covfefe --reason 'For testing purposed; please ignore.' --expiration 2024-01-01
2023-03-23 08:09:13,033	INFO	mc16_13TeV:mc16_13TeV.364677.Sherpa_CT10_CT14nnlo_CSShower_2to2jets_JZ1W.deriv.DAOD_STDM11.e6997_e5984_s3126_r10201_r10210_p4615_tid26084487_00 will be declared
2023-03-23 08:09:13,033	WARNING	mc16_13TeV:mc16_13TeV.364677.Sherpa_CT10_CT14nnlo_CSShower_2to2jets_JZ1W.deriv.DAOD_STDM11.e6997_e5984_s3126_r10201_r10210_p4615_tid26084487_00 does not exist
2023-03-23 08:09:13,066	INFO	Exception successfully submitted. Summary below
Total DIDs                                                                                                2
DID not submitted because it is a file                                                                    0
DID not submitted because it is a container                                                               0
DID not submitted because it is not part of the lifetime campaign                                         0
DID successfully submitted                                                                                1

Rucio Version

No response

Additional Information

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