Copy session properties on cqlsh.py do_login

patch by Andres de la Peña; reviewed by Zhao Yang for CASSANDRA-13640

CHANGES.txt

@@ -1,4 +1,5 @@
 3.0.15
+ * Copy session properties on cqlsh.py do_login (CASSANDRA-13640)
  * Potential AssertionError during ReadRepair of range tombstone and partition deletions (CASSANDRA-13719)
  * Don't let stress write warmup data if n=0 (CASSANDRA-13773)
  * Gossip thread slows down when using batch commit log (CASSANDRA-12966)

bin/cqlsh.py

@@ -2206,6 +2206,12 @@ class Shell(cmd.Cmd):
         else:
             session = conn.connect()
 
+        # Copy session properties
+        session.default_timeout = self.session.default_timeout
+        session.row_factory = self.session.row_factory
+        session.default_consistency_level = self.session.default_consistency_level
+        session.max_trace_wait = self.session.max_trace_wait
+
         # Update after we've connected in case we fail to authenticate
         self.conn = conn
         self.auth_provider = auth_provider