scylla/3.11.x: disable Tablets for shardawaretest keyspace

With Scylla 2025.1, NetworkTopologyStrategy keyspaces have Tablets
enabled by default. With Tablets, the shard a tablet is assigned to is
independent of the driver's hash-based getShardId() calculation, so the
hardcoded expected-shard values ("shard 0" / "shard 1") become
non-deterministic.

Add AND TABLETS = {'enabled': false} to the CREATE KEYSPACE statement
to restore traditional shard assignment, making the shard expectations
reliable again.

Author: nikagra

driver-core/src/test/java/com/datastax/driver/core/ShardAwarenessTest.java

@@ -100,7 +100,7 @@ public void correctShardInTracingTest() {
     session().execute("DROP KEYSPACE IF EXISTS shardawaretest");
     session()
         .execute(
-            "CREATE KEYSPACE shardawaretest WITH replication = {'class': 'NetworkTopologyStrategy', 'datacenter1': '3'}");
+            "CREATE KEYSPACE shardawaretest WITH replication = {'class': 'NetworkTopologyStrategy', 'datacenter1': '3'} AND TABLETS = {'enabled': false}");
     session()
         .execute("CREATE TABLE shardawaretest.t (pk text, ck text, v text, PRIMARY KEY (pk, ck))");