Stricter View URI parsing especially for deletes

This is a companion JIRA to KITE-1077 but we hit a case where the someone entered a command like the following where they wanted to delete all the data with an attribute of which the dataset is partitioned.

So they would typically enter a command like

kite-dataset delete view:hdfs:/path/namespace/datasetname?attribute=value

However due to copy/paste issue or typing they enter the following (notice the extra pipe):

kite-dataset delete view:hdfs:/some/namespace/datasetname?attribute=|value

What this does is the delete command gets the URI "view:hdfs:/some/namespace/datasetname?attribute=". It then starts to delete all of the data in that dataset while on the command prompt is sees that "value" is not a valid command. It would be less surprising if the parsing logic blew up with an invalid URI or this got interpreted as delete nothing because nothing matches.