rucio upload CLI with parent dataset doesn't create rules
I may be misunderstanding the arguments to `rucio upload` here, but either way this doesn't seem like desirable behaviour.

From https://github.com/rucio/rucio/blob/master/bin/rucio#L1002, we have been operating under the belief we could upload a file and attach it to an existing dataset with `rucio upload <dataset-did> <file/folder>`. Although this seems to work (i.e. generates a replica), it doesn't seem to generate a replication rule for that replica:

```bash
[user@903de6bd49ee ~]$ rucio upload --rse EULAKE-1 --lifetime 3600 --scope SKA_SKAO_BARNSLEY-testing SKA_SKAO_BARNSLEY-testing:02122021 02122021.1 
2021-12-02 11:49:57,405	INFO	Preparing upload for file 02122021.1
2021-12-02 11:49:57,800	INFO	Successfully added replica in Rucio catalogue at EULAKE-1
2021-12-02 11:49:58,727	INFO	Trying upload with gsiftp to EULAKE-1
2021-12-02 11:50:00,488	INFO	Successful upload of temporary file. gsiftp://eulakeftp.cern.ch:2811/eos/eulake/tests/rucio_test/eulake_1/SKA_SKAO_BARNSLEY-testing/77/32/02122021.1.rucio.upload
2021-12-02 11:50:00,721	INFO	Successfully uploaded file 02122021.1

[user@903de6bd49ee ~]$ rucio list-content SKA_SKAO_BARNSLEY-testing:02122021
+--------------------------------------+--------------+
| SCOPE:NAME                           | [DID TYPE]   |
|--------------------------------------+--------------|
| SKA_SKAO_BARNSLEY-testing:02122021.1 | FILE         |
+--------------------------------------+--------------+

[user@903de6bd49ee ~]$ rucio list-rules SKA_SKAO_BARNSLEY-testing:02122021
ID    ACCOUNT    SCOPE:NAME    STATE[OK/REPL/STUCK]    RSE_EXPRESSION    COPIES    EXPIRES (UTC)    CREATED (UTC)
----  ---------  ------------  ----------------------  ----------------  --------  ---------------  ---------------

[user@903de6bd49ee ~]$ rucio list-rules SKA_SKAO_BARNSLEY-testing:02122021.1
ID    ACCOUNT    SCOPE:NAME    STATE[OK/REPL/STUCK]    RSE_EXPRESSION    COPIES    EXPIRES (UTC)    CREATED (UTC)
----  ---------  ------------  ----------------------  ----------------  --------  ---------------  ---------------

[user@903de6bd49ee ~]$ rucio list-file-replicas SKA_SKAO_BARNSLEY-testing:02122021.1
+---------------------------+------------+------------+-----------+--------------------------------------------------------------------------------------------------------------------------+
| SCOPE                     | NAME       | FILESIZE   | ADLER32   | RSE: REPLICA                                                                                                             |
|---------------------------+------------+------------+-----------+--------------------------------------------------------------------------------------------------------------------------|
| SKA_SKAO_BARNSLEY-testing | 02122021.1 | 2.000 B    | 006e003c  | EULAKE-1: root://eoseulake.cern.ch:1094//eos/eulake/tests/rucio_test/eulake_1/SKA_SKAO_BARNSLEY-testing/77/32/02122021.1 |
+---------------------------+------------+------------+-----------+--------------------------------------------------------------------------------------------------------------------------+
```

compared with the usual behaviour when not specifying this parent dataset:

```
[user@903de6bd49ee ~]$ rucio upload --rse EULAKE-1 --lifetime 3600 --scope SKA_SKAO_BARNSLEY-testing 02122021.2 
2021-12-02 12:05:23,927	INFO	Preparing upload for file 02122021.2
2021-12-02 12:05:24,197	INFO	Successfully added replica in Rucio catalogue at EULAKE-1
2021-12-02 12:05:24,320	INFO	Successfully added replication rule at EULAKE-1
2021-12-02 12:05:24,816	INFO	Trying upload with gsiftp to EULAKE-1
2021-12-02 12:05:26,364	INFO	Successful upload of temporary file. gsiftp://eulakeftp.cern.ch:2811/eos/eulake/tests/rucio_test/eulake_1/SKA_SKAO_BARNSLEY-testing/43/0f/02122021.2.rucio.upload
2021-12-02 12:05:26,611	INFO	Successfully uploaded file 02122021.2

[user@903de6bd49ee ~]$ rucio list-rules SKA_SKAO_BARNSLEY-testing:02122021.2
ID                                ACCOUNT      SCOPE:NAME                            STATE[OK/REPL/STUCK]    RSE_EXPRESSION    COPIES    EXPIRES (UTC)        CREATED (UTC)
--------------------------------  -----------  ------------------------------------  ----------------------  ----------------  --------  -------------------  -------------------
6f6b6dfd8434450ba976498612471b94  robbarnsley  SKA_SKAO_BARNSLEY-testing:02122021.2  OK[1/0/0]               EULAKE-1          1         2021-12-02 13:05:24  2021-12-02 12:05:24
```

which verbosely states that a replication rule has been created.

I'd previously (erroneously) attributed this behaviour to uploading directories, which I think I mentioned during the dev meeting.

diff --git a/lib/rucio/client/uploadclient.py b/lib/rucio/client/uploadclient.py
index d837bdfba..7b243eb41 100644
--- a/lib/rucio/client/uploadclient.py
+++ b/lib/rucio/client/uploadclient.py
@@ -376,7 +376,11 @@ class UploadClient:
                                                 'lifetime': file.get('lifetime')}])
                 logger(logging.INFO, 'Successfully created dataset %s' % dataset_did_str)
             except DataIdentifierAlreadyExists:
-                logger(logging.DEBUG, 'Dataset %s already exists' % dataset_did_str)
+                logger(logging.INFO, 'Dataset %s already exists - no rule will be created' % dataset_did_str)
+
+                if file.get('lifetime') is not None:
+                    raise InputValidationError('Dataset %s exists and lifetime %s given. Prohibited to modify parent dataset lifetime.' % (dataset_did_str,
+                                                                                                                                           file.get('lifetime')))
         else:
             logger(logging.DEBUG, 'Skipping dataset registration')
 
['lib/rucio/client/uploadclient.py']