test/alternator: validate that TagResource needs a Tags parameter
test/alternator: validate that TagResource needs a Tags parameter

A short new test to verify that in the TagResource operation, the
Tags parameter - specifying which tags to set - is required.

The test passes on both AWS and Alternator - they both produce a
ValidationException in this case (the specific human-readable error
message is different, though, so we don't check it).

Signed-off-by: Nadav Har'El <625169824b719df98706d88646d0aae6f368ae4d@scylladb.com>
Message-Id: <20211206140541.1157574-1-625169824b719df98706d88646d0aae6f368ae4d@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla